@inproceedings{shirali2008disabled,
  author    = {Shirali-Shahreza, M. and Shirali-Shahreza, S.},
  title     = {{CAPTCHA} Systems for Disabled People},
  booktitle = {Proceedings of the IEEE Intelligent Computer Communication and Processing 2008 (ICCP 2008)},
  address   = {Cluj-Napoca, Romania},
  month     = aug,
  year      = {2008},
  pages     = {319--322},
  doi		= {10.1109/ICCP.2008.4648396}
}