@article{MR2607997,
  abstract = {We study the automorphism groups of the reduction X0(N)×𝔽ˉp of a modular curve X0(N) over primes p $\nimd N$. },
  file = {KontogeorgisYifanAugust09.pdf},
  mrclass = {94A60 (11T71 14G50)},
  mrnumber = {2607997 (2010m:94101)},
  issn = {0898-1221},
  number = {8},
  year = {2010},
  url = {http://dx.doi.org/10.1016/j.camwa.2010.02.008},
  author = {Konstantinou, Elisavet and Kontogeorgis, Aristides},
  pages = {2901--2917},
  volume = {59},
  fjournal = {Computers \& Mathematics with Applications. An International Journal},
  doi = {10.1016/j.camwa.2010.02.008},
  coden = {CMAPDK},
  journal = {Comput. Math. Appl.},
  title = {Ramanujan's class invariants and their use in elliptic curve cryptography}
}