Spyridon D. Mourtas

S. D. Mourtas

© 2019 All rights reserved.

Mathematician

Spyridon D. Mourtas

Welcome to my website,
I am a Postdoctoral researcher at the National and Kapodistrian University of Athens. My principal interests are in Computational Mathematics, Computational Finance and Applied Linear Algebra. On this site you can find information about my education, work experience, publications and other items that may be of interest to you.

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What I Do

Mathematician

Computational mathematics, computational finance, applied linear algebra, financial modeling and data analysis.

Web Developer

Website and software application designing, building, or maintaining. Website layout/user interfaces creation by using standard HTML/CSS practices or by using CMS.

Intelligent Algorithms

Artificial neural networks, metaheuristics, fuzzy systems, mathematical optimization.

Musician

Music theory, classical guitar and electric guitar.

Resume

Work Experience

2022-Current

Siberian Federal University

Researcher

2018-Current

National and Kapodistrian University of Athens

External Academic Collaborator and Teaching Staff

2015 - 2017

Digital Agency socials.gr

External Collaborator

Ads creation and posts schedule on social media

2007 - 2015

Conservatories of Music:
Patraiko, Patraiko Riou, Neo Odio Riou, Europio, Anastasopoulou, Messatidos

Conservatory Teacher

Classical guitar, electric guitar and music theory teacher

Academic Teaching Experience

2024

National and Kapodistrian University of Athens
Department of Economics

Applied Operational Research

Undergraduate Program (ECON907)

2024

National and Kapodistrian University of Athens
Department of Economics

Advanced Excel Laboratory

MSc Program in Quantitative Investing (ECON897)

2023-2024

National and Kapodistrian University of Athens
Department of Economics

Mathematics I (course tutorial)

Undergraduate Program (ECON299)

2023-2024

National and Kapodistrian University of Athens
Department of Economics

Mathematical Programming Techniques

Undergraduate Program (ECON871)

2023-2024

National and Kapodistrian University of Athens
Department of Economics

MATLAB Laboratory

MSc Program in Quantitative Investing (ECON748)

2019, 2021-2024

National and Kapodistrian University of Athens
Department of Economics

Linear Maths (laboratory course)

Undergraduate Program (ECON325)

2023-2024

National and Kapodistrian University of Athens
Department of Economics

Research Methods Seminar

MSc Program in Quantitative Investing (ECON829)

2018-2019

National and Kapodistrian University of Athens
Department of Economics

Introduction to Computer Science and Data Analysis (laboratory course)

Undergraduate Program (ECON198)

2024

National and Kapodistrian University of Athens
Department of Business Administration

Theory and Applications of Optimization Methods

Undergraduate Program (BA285)

2023-2024

National and Kapodistrian University of Athens
Department of Business Administration

Mathematical Calculus in Business Problems

Undergraduate Program (BA261)

Education

Current

National and Kapodistrian University of Athens

Postdoc

Postdoctoral researcher at the Department of Economics of National and Kapodistrian University of Athens, Greece with postdoctoral research title “Fusion Optimization Algorithms and Artificial Intelligence Techniques for Financial Engineering Problems“.

2023

National and Kapodistrian University of Athens

PhD

PhD in Economics of the Department of Economics of National and Kapodistrian University of Athens, Greece with dissertation title “Intelligent Online Optimization Algorithms for Portfolio Analysis and Management“.

2019

National and Kapodistrian University of Athens

MSc

Master Degree in Applied Economics and Finance with direction in Mathematical Finance and Risk Analysis of the Department of Economics of National and Kapodistrian University of Athens, Greece.

2016

University of Patras

BSc

Bachelor Degree in Mathematics with direction in Computer Science and Computational Mathematics of the Department of Mathematics of the University of Patras, Greece.

Scholarships / Grants / Awards

2024

ESPA 2021-2027

Acquisition of academic experience for young scientists grant

Scientific field: Applied Operational Research.

2022 - 2024

Ministry of Science and Higher Education of the Russian Federation

Research project grant

Study of the topic “Hybrid Methods of Modelling and Optimization in Complex Systems”.

2023 - 2024

National and Kapodistrian University of Athens

Research project grant

Study of the topics “A Weights Direct Determination Neural Network for Credit Card Attrition Analysis” and “Hermitian solutions of the quaternion algebraic Riccati equations through zeroing neural networks with application to quadrotor control”.

2022

11th International Workshop on Mathematical Models and their Applications

International Award

Best paper award for the paper entitled “Credit Card Attrition Classification Through Neuronets”.

2021 - 2023

National and Kapodistrian University of Athens

Scholarship

PhD Scholarship “Stavros Tsakirakis”.

2021 - 2022

Erasmus+ 2021-2027

Mobility grant

Sending Institution: University of Nis, Serbia, Computer Science Department.

2021

National and Kapodistrian University of Athens

Research project grant

Study of the topic “Investigating GDP and debt through Kaleckian dynamic models”.

Research Presentations

2023

HMMOCS-ΙΙ

Conference

“Customer churn classification through a weights and structure determination neural network”, Hybrid methods of modeling and optimization in complex systems, Krasnoyarsk, Russia

2023

HETS

Conference

“Prediction of Staff Attrition using Neural Networks”, International scientific and practical forum on issues of sustainable development in the transition to a new socio-technological order, Krasnoyarsk, Russia

2023

ISPC

Conference

“Exploiting Markowitz Theory through Zeroing Neural Networks”, 4th International Scientific and Practical Conference on “Artificial Intelligence: Technogenic vs Sociality”, Krasnoyarsk, Russia

2022

IWMMA

Conference

“Credit Card Attrition Classification Through Neuronets”, 11th International Workshop on Mathematical Models and their Applications, Krasnoyarsk, Russia

2022

SFU

Lecture

“Introduction to Optimization with Application in Finance”, Institute of Business Process Management, Siberian Federal University, Krasnoyarsk, Russia

2022

IMAEF

Conference

“Loan Approval Classification Using a Bio-inspired Neural Network”, 8th International Ioannina Meeting on Applied Economics and Finance, Kefalonia, Greece

2020

IRNet and IIMT

Webinar

“Portfolio Insurance and Intelligent Algorithms”, Computational Management: Applications of Computational Intelligence in Business Management, IRNet and IIMT, India

Certificates of Competency

2018

University of Michigan

ECPE - Certificate of Proficiency in English

2017

National and Kapodistrian University of Athens

Web Developer Certificate

2013

Europio Conservatory of Music

Diploma in Counterpoint

2011

Europio Conservatory of Music

Diploma in Harmony

2008

Key-CERT IT Specialist

Technical Computer Networks Certificate

Certificates of Attendance

2019

Athens University of Economics and Business

16th Summer School on Risk Finance and Stochastics

2019

Attica Bank

Attica Bank Innovation Days

2018

Athens University of Economics and Business

15th Summer School in Stochastic Finance

Machine Learning Skills

Time Series Forecasting

90%

Regression / Classification Problems

90%

Optimization Problems

90%

Neural Networks

Matlab Neural Network Toolbox

90%

Tensorflow / Tensorflowjs

80%

Gradient / Zeroing Neural Networks

90%

Coding Skills

Matlab

90%

JavaScript / JQUERY

80%

Python

80%

Visual Basic

75%

HTML / CSS

80%

PHP

70%

SQL

70%

C / C++

70%

Java

65%

Fortran 95

65%

Prolog

65%

Specialization in Programs

Eviews

85%

SPSS

65%

SAS

65%

Latex

90%

MS Office

85%

CMS

75%

Adobe Dreamweaver

80%

Adobe InDesign

70%

Adobe Photoshop

70%

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Publications

Research Articles

P.S. Stanimirović, S.D. Mourtas, D. Mosić, V.N. Katsikis, X. Cao, S. Li, “Zeroing neural network approaches for computing time-varying minimal rank outer inverse”, Applied Mathematics and Computation, 465, 128412 (2024)

15 March 2024

S.D. Mourtas, V.N. Katsikis, P.S. Stanimirović, L.A. Kazakovtsev, “Credit and Loan Approval Classification Using a Bio-Inspired Neural Network”, Biomimetics, 9(2), 120 (2024)

17 February 2024

H. Jerbi, I. Al-Darraji, S. Albadran, S.B. Aoun, T.E. Simos, S.D. Mourtas, V.N. Katsikis, “Solving quaternion nonsymmetric algebraic Riccati equations through zeroing neural networks”, AIMS Mathematics, 9(3), 5794-5809 (2024)

31 January 2024

Y. He, X. Dong, T.E. Simos, S.D. Mourtas, V.N. Katsikis, D. Lagios, P. Zervas, G. Tzimas, “A bio-inspired weights and structure determination neural network for multiclass classification: Applications in occupational classification systems”, AIMS Mathematics, 9(1), 2411-2434 (2024)

25 December 2023

H. Jerbi, O. Alshammari, S.B. Aoun, M. Kchaou, T.E. Simos, S.D. Mourtas, V.N. Katsikis, “Hermitian Solutions of the Quaternion Algebraic Riccati Equations through Zeroing Neural Networks with Application to Quadrotor Control”, Mathematics, 12(1), 15 (2024)

20 December 2023

S.B. Aoun, N. Derbel, H. Jerbi, T.E. Simos, S.D. Mourtas, V.N. Katsikis, “A quaternion Sylvester equation solver through noise-resilient zeroing neural networks with application to control the SFM chaotic system”, AIMS Mathematics, 8(11), 27376-27395 (2023)

26 September 2023

V.N. Kovalnogov, R.V. Fedorov, I.I. Shepelev, V.V. Sherkunov, T.E. Simos, S.D. Mourtas, V.N. Katsikis, “A novel quaternion linear matrix equation solver through zeroing neural networks with applications to acoustic source tracking”, AIMS Mathematics, 8(11), 25966-25989 (2023)

8 September 2023

S.D. Mourtas, E. Drakonakis, Z. Bragoudakis, “Forecasting the gross domestic product using a weight direct determination neural network”, AIMS Mathematics, 8(10), 24254-24273 (2023)

14 August 2023

V.N. Kovalnogov, R.V. Fedorov, D.A. Demidov, M.A. Malyoshina, T.E. Simos, S.D. Mourtas, V.N. Katsikis, “Computing quaternion matrix pseudoinverse with zeroing neural networks”, AIMS Mathematics, 8(10), 22875-22895 (2023)

19 July 2023

T.E. Simos, V.N. Katsikis, S.D. Mourtas, P.S. Stanimirović, “Solving Time-Varying Nonsymmetric Algebraic Riccati Equations With Zeroing Neural Dynamics”, IEEE Transactions on Systems, Man, and Cybernetics: Systems, 53(10), 6575-6587 (2023)

27 June 2023

R. Abbassi, H. Jerbi, M. Kchaou, T.E. Simos, S.D. Mourtas, V.N. Katsikis, “Towards Higher-Order Zeroing Neural Networks for Calculating Quaternion Matrix Inverse with Application to Robotic Motion Tracking”, Mathematics, 11(12), 2756 (2023)

18 June 2023

V.N. Kovalnogov, R.V. Fedorov, D.A. Demidov, M.A. Malyoshina, T.E. Simos, V.N. Katsikis, S.D. Mourtas, R.D. Sahas, “Zeroing neural networks for computing quaternion linear matrix equation with application to color restoration of images”, AIMS Mathematics, 8(6), 14321-14339 (2023)

18 April 2023

D. Mosić, P.S. Stanimirović, S.D. Mourtas, “Minimal Rank Properties of Outer Inverses with Prescribed Range and Null Space”, Mathematics, 11(7), 1732 (2023)

4 April 2023

H. Alharbi, O. Alshammari, H. Jerbi, T.E. Simos, V.N. Katsikis, S.D. Mourtas, R.D. Sahas, “A Fresnel Cosine Integral WASD Neural Network for the Classification of Employee Attrition”, Mathematics, 11(6), 1506 (2023)

20 March 2023

V.N. Katsikis, S.D. Mourtas, P.S. Stanimirović, S. Li, X. Cao, “Time-varying minimum-cost portfolio insurance problem via an adaptive fuzzy-power LVI-PDNN”, Applied Mathematics and Computation, 441, 127700 (2023)

15 March 2023

V.N. Katsikis, P.S. Stanimirović, S.D. Mourtas, L. Xiao, D. Stanujkic, D. Karabasevic, “Zeroing Neural Network Based on Neutrosophic Logic for Calculating Minimal-Norm Least-Squares Solutions to Time-Varying Linear Systems”, Neural Processing Letters, 55, 8731-8753 (2023)

17 February 2023

S.D. Mourtas, C. Kasimis, V.N. Katsikis, “Robust PID controllers tuning based on the beetle antennae search algorithm”, Memories - Materials, Devices, Circuits and Systems, 4, 100030 (2023)

17 February 2023

D. Lagios, S.D. Mourtas, P. Zervas, G. Tzimas, “A Weights Direct Determination Neural Network for International Standard Classification of Occupations”, Mathematics, 11(3), 629 (2023)

26 January 2023

H. Alharbi, H. Jerbi, M. Kchaou, R. Abbassi, T.E. Simos, S.D. Mourtas, V.N. Katsikis, “Time-Varying Pseudoinversion Based on Full-Rank Decomposition and Zeroing Neural Networks”, Mathematics, 11(3), 600 (2023)

24 January 2023

P.S. Stanimirović, B. Ivanov, D. Stanujkić, V.N. Katsikis, S.D. Mourtas, L.A. Kazakovtsev, S.A. Edalatpanah, “Improvement of Unconstrained Optimization Methods Based on Symmetry Involved in Neutrosophy”, Symmetry, 15(1), 250 (2023)

16 January 2023

X. Li, C.-L. Lin, T.E. Simos, S.D. Mourtas, V.N. Katsikis, “Computation of Time-Varying {2,3}- and {2,4}-Inverses through Zeroing Neural Networks”, Mathematics, 10(24), 4759 (2022)

14 December 2022

H. Jerbi, H. Alharbi, M. Omri, L. Ladhar, T.E. Simos, S.D. Mourtas, V.N. Katsikis, “Towards Higher-Order Zeroing Neural Network Dynamics for Solving Time-Varying Algebraic Riccati Equations”, Mathematics, 10(23), 4490 (2022)

28 November 2022

P.S. Stanimirović, S.D. Mourtas, V.N. Katsikis, L.A. Kazakovtsev, V.N. Krutikov, “Recurrent Neural Network Models Based on Optimization Methods”, Mathematics, 10(22), 4292 (2022)

16 November 2022

V.N. Kovalnogov, R.V. Fedorov, D.A. Generalov, A.V. Chukalin, V.N. Katsikis, S.D. Mourtas, T.E. Simos, “Portfolio Insurance through Error-Correction Neural Networks”, Mathematics, 10(18), 3335 (2022)

14 September 2022

S.D. Mourtas, C. Kasimis, “Exploiting Mean-Variance Portfolio Optimization Problems through Zeroing Neural Networks”, Mathematics, 10(17), 3079 (2022)

26 August 2022

S.D. Mourtas, V.N. Katsikis, E. Drakonakis, S. Kotsios, “Stabilization of Stochastic Exchange Rate Dynamics under Central Bank Intervention using Neuronets”, International Journal of Information Technology and Decision Making, 22(2), 855-883 (2023)

18 August 2022

S.D. Mourtas, V.N. Katsikis,“Exploiting the Black-Litterman framework through error-correction neural networks”, Neurocomputing, 498, 43-58 (2022)

7 August 2022

T.E. Simos, V.N. Katsikis, S.D. Mourtas, “A multi-input with multi-function activated weights and structure determination neuronet for classification problems and applications in firm fraud and loan approval”, Applied Soft Computing, 127, 109351 (2022)

22 July 2022

S.D. Mourtas, “A Weights Direct Determination Neuronet for Time-Series with Applications in the Industrial Indices of the Federal Reserve Bank of St. Louis”, Journal of Forecasting, 41(7), 1512-1524 (2022)

6 June 2022

T.E. Simos, V.N. Katsikis, S.D. Mourtas, P.S. Stanimirović, “Unique non-negative definite solution of the time-varying algebraic Riccati equations with applications to stabilization of LTV systems”, Mathematics and Computers in Simulation, 202, 164-180 (2022)

6 June 2022

W. Jiang, C.-L. Lin, V.N. Katsikis, S.D. Mourtas, P.S. Stanimirović, T.E. Simos, “Zeroing Neural Network Approaches Based on Direct and Indirect Methods for Solving the Yang–Baxter-like Matrix Equation”, Mathematics, 10(11), 1950 (2022)

6 June 2022

T.E. Simos, V.N. Katsikis, S.D. Mourtas, P.S. Stanimirović, “Finite-time Convergent Zeroing Neural Network for Solving Time-Varying Algebraic Riccati Equations”, Journal of the Franklin Institute, 359(18), 10867-10883 (2022)

13 May 2022

M. Kornilova, V. Kovalnogov, R. Fedorov, M. Zamaleev, V.N. Katsikis, S.D. Mourtas, T.E. Simos, “Zeroing Neural Network for Pseudoinversion of an Arbitrary Time-Varying Matrix Based on Singular Value Decomposition”, Mathematics, 10(8), 1208 (2022)

7 April 2022

T.E. Simos, V.N. Katsikis, S.D. Mourtas, P.S. Stanimirović, D. Gerontitis, “A Higher-Order Zeroing Neural Network for Pseudoinversion of an Arbitrary Time-Varying Matrix with Applications to Mobile Object Localization”, Information Sciences, 600, 226-238 (2022)

4 April 2022

S.D. Mourtas, V.N. Katsikis, C. Kasimis, “Feedback Control Systems Stabilization Using a Bio-inspired Neural Network”, EAI Endorsed Trans AI Robotics, 1, 1-13 (2022)

4 February 2022

V.N. Katsikis, S.D. Mourtas, “Diversification of Time-Varying Tangency Portfolio under Nonlinear Constraints through Semi-Integer Beetle Antennae Search Algorithm”, AppliedMath, 1(1), 63-73 (2021)

20 December 2021

T.E. Simos, V.N. Katsikis, S.D. Mourtas, “Multi-input bio-inspired weights and structure determination neuronet with applications in European Central Bank publications”, Mathematics and Computers in Simulation, 193, 451-465 (2021)

11 November 2021

T.E. Simos, V.N. Katsikis, S.D. Mourtas, “A fuzzy WASD neuronet with application in breast cancer prediction”, Neural Computing and Applications, 34, 3019–3031 (2021)

6 October 2021

V.N. Katsikis, S.D. Mourtas, P.S. Stanimirović, S. Li, X. Cao, “Time-varying mean-variance portfolio selection problem solving via LVI-PDNN”, Computers & Operations Research, 105582 (2021)

30 September 2021

V.N. Katsikis, P.S. Stanimirović, S.D. Mourtas, L. Xiao, D. Karabasević, D. Stanujkić, “Zeroing Neural Network with Fuzzy Parameter for Computing Pseudoinverse of Arbitrary Matrix”, IEEE Transactions on Fuzzy Systems, 30(9), 3426-3435 (2022)

29 September 2021

T.E. Simos, S.D. Mourtas, V.N. Katsikis, “Time-varying Black–Litterman portfolio optimization using a bio-inspired approach and neuronets”, Applied Soft Computing, 112, 107767 (2021)

1 November 2021

S.D. Mourtas, V.N. Katsikis, “V-Shaped BAS: Applications on Large Portfolios Selection Problem”, Computational Economics, 60, 1353–1373 (2022)

22 August 2021

V.N. Katsikis, S.D. Mourtas, P.S. Stanimirović, Y. Zhang, “Continuous-Time Varying Complex QR Decomposition via Zeroing Neural Dynamics”, Neural Processing Letters, 53, 3573–3590 (2021)

24 June 2021

V.N. Katsikis, S.D. Mourtas, “Binary Beetle Antennae Search Algorithm for Tangency Portfolio Diversification”, Journal of Modeling and Optimization, 13(1), 44-50 (2021)

15 June 2021

V.N. Katsikis, S.D. Mourtas, P.S. Stanimirović, S. Li, X. Cao, “Time-Varying Mean-Variance Portfolio Selection under Transaction Costs and Cardinality Constraint Problem via Beetle Antennae Search Algorithm (BAS)”, SN Operations Research Forum, 2(2), 18 (2021)

29 March 2021

V.N. Katsikis, S.D. Mourtas, P.S. Stanimirović, Y. Zhang, “Solving Complex-Valued Time-Varying Linear Matrix Equations via QR Decomposition With Applications to Robotic Motion Tracking and on Angle-of-Arrival Localization”, IEEE Transactions on Neural Networks and Learning Systems, 33(8), 3415-3424 (2022)

29 January 2021

V.N. Katsikis, S.D. Mourtas, “Optimal Portfolio Insurance under Nonlinear Transaction Costs”, Journal of Modeling and Optimization, 12(2), 117-124 (2020)

15 December 2020

M.A. Medvedeva, V.N. Katsikis, S.D. Mourtas, T.E. Simos, “Randomized time-varying knapsack problems via binary beetle antennae search algorithm: Emphasis on applications in portfolio insurance”, Mathematical Methods in the Applied Sciences, 44(2), 2002-2012 (2020)

21 September 2020

V.N. Katsikis, S.D. Mourtas, P.S. Stanimirović, S. Li, X. Cao, “Time-varying minimum-cost portfolio insurance under transaction costs problem via beetle antennae search algorithm (BAS)”, Applied Mathematics and Computation, 385, 125453 (2020)

15 November 2020

V.N. Katsikis, S.D. Mourtas, “ORPIT - a Matlab Toolbox for Option Replication and Portfolio Insurance in Incomplete Markets”, Computational Economics, 56(4), 711-721 (2019)

29 October 2019

V.N. Katsikis, S.D. Mourtas, “A heuristic process on the existence of positive bases with applications to minimum-cost portfolio insurance in C [a,b]”, Applied Mathematics and Computation, 349, 221–244 (2019)

15 May 2019

Book Chapters

V.N. Katsikis, P.S. Stanimirović, S.D. Mourtas, S. Li, X. Cao, “Towards Higher Order Dynamical Systems”. In: I. Kyrchei (ed) Generalized Inverses: Algorithms and Applications. Mathematics Research Developments, Nova Science Publishers, Inc., New York, USA, 207-239 (2021)

28 December 2021

V.N. Katsikis, S.D. Mourtas, “Portfolio Insurance and Intelligent Algorithms”. In: S. Patnaik, K. Tajeddini, V. Jain (eds) Computational Management. Modeling and Optimization in Science and Technologies, Springer, Cham, vol. 18, 305-323 (2021)

30 May 2021

Conference Papers

S.D. Mourtas, “Color restoration of images through high order zeroing neural networks”. In: P.S. Stanimirović, A.A. Stupina, I.V. Kovalev (eds) Proceedings of II International Workshop “Hybrid Methods of Modeling and Optimization in Complex Systems”, November 28-30, Krasnoyarsk, Russia, 2023. ITM Web of Conferences, EDP Sciences, Paris, France, vol. 59, 01005 (2024)

25 January 2024

S.D. Mourtas, “Customer churn classification through a weights and structure determination neural network”. In: P.S. Stanimirović, A.A. Stupina, I.V. Kovalev (eds) Proceedings of II International Workshop “Hybrid Methods of Modeling and Optimization in Complex Systems”, November 28-30, Krasnoyarsk, Russia, 2023. ITM Web of Conferences, EDP Sciences, Paris, France, vol. 59, 01004 (2024)

25 January 2024

P.S. Stanimirović, B. Ivanov, V.N. Katsikis, S.D. Mourtas, “Neutrosophy in Unconstrained Nonlinear Optimization”. In: P.S. Stanimirović, A.A. Stupina, E. Semenkin, I.V. Kovalev (eds) Proceedings of International Workshop “Hybrid Methods of Modeling and Optimization in Complex Systems”, November 22-24, 2022, Krasnoyarsk, the Russian Federation. European Proceedings of Computers and Technology, European Publisher, London, UK, vol. 1, 131-193 (2023)

27 February 2023

S.D. Mourtas, P.S. Stanimirović, V.N. Katsikis, “A Neutrosophic Adaptive Recurrent Neural Network for Time-Varying Matrix Inversion”. In: P.S. Stanimirović, A.A. Stupina, E. Semenkin, I.V. Kovalev (eds) Proceedings of International Workshop “Hybrid Methods of Modeling and Optimization in Complex Systems”, November 22-24, 2022, Krasnoyarsk, the Russian Federation. European Proceedings of Computers and Technology, European Publisher, London, UK, vol. 1, 249-255 (2023)

27 February 2023

S.D. Mourtas, V.N. Katsikis, R. Sahas, “Credit Card Attrition Classification Through Neuronets”. In: P.S. Stanimirović, A.A. Stupina, E. Semenkin, I.V. Kovalev (eds) Proceedings of International Workshop “Hybrid Methods of Modeling and Optimization in Complex Systems”, November 22-24, 2022, Krasnoyarsk, the Russian Federation. European Proceedings of Computers and Technology, European Publisher, London, UK, vol. 1, 86-93 (2023)

27 February 2023

Contact

Athens

spirosmourtas@gmail.com