Spoken captcha: A captcha system for blind users. Shirali-Shahreza, S., Abolhassani, H., Sameti, H., & Hassan, M In 2009 ISECS International Colloquium on Computing, Communication, Control, and Management, volume 1, pages 221–224, 2009. IEEE. bibtex @inproceedings{shirali2009spoken,
title={Spoken captcha: A captcha system for blind users},
author={Shirali-Shahreza, Sajad and Abolhassani, Hassan and Sameti, Hossein and Hassan, M},
booktitle={2009 ISECS International Colloquium on Computing, Communication, Control, and Management},
volume={1},
pages={221--224},
year={2009},
organization={IEEE}
}