@inproceedings{shirali2008nintendo,
  author    = {Shirali-Shahreza, M. and Shirali-Shahreza, S.},
  title     = {A {CAPTCHA} System for {Nintendo} {DS}},
  booktitle = {Proceedings of the Seventh Annual Workshop on Network and Systems Support for Games (NetGames 2008)},
  address   = {Worcester, MA, USA},
  month     = oct,
  year      = {2008},
  pages     = {104--105},
  doi       = {10.1145/1517494.1517518},
  url       = {https://dl.acm.org/doi/10.1145/1517494.1517518},
}