Markus Jakobsson. Captcha-free throttling. In Dirk Balfanz, Jessica Staddon, editors, Proceedings of the 2nd ACM Workshop on Security and Artificial Intelligence, AISec 2009, Chicago, Illinois, USA, November 9, 2009. pages 15-22, ACM, 2009. [doi]
@inproceedings{Jakobsson09,
title = {Captcha-free throttling},
author = {Markus Jakobsson},
year = {2009},
doi = {10.1145/1654988.1654994},
url = {http://doi.acm.org/10.1145/1654988.1654994},
researchr = {https://researchr.org/publication/Jakobsson09},
cites = {0},
citedby = {0},
pages = {15-22},
booktitle = {Proceedings of the 2nd ACM Workshop on Security and Artificial Intelligence, AISec 2009, Chicago, Illinois, USA, November 9, 2009},
editor = {Dirk Balfanz and Jessica Staddon},
publisher = {ACM},
isbn = {978-1-60558-781-3},
}