Haichang Gao, Wei Wang, Jiao Qi, Xuqin Wang, Xiyang Liu, Jeff Yan. The robustness of hollow CAPTCHAs. In Ahmad-Reza Sadeghi, Virgil D. Gligor, Moti Yung, editors, 2013 ACM SIGSAC Conference on Computer and Communications Security, CCS'13, Berlin, Germany, November 4-8, 2013. pages 1075-1086, ACM, 2013. [doi]
@inproceedings{GaoWQWLY13,
title = {The robustness of hollow CAPTCHAs},
author = {Haichang Gao and Wei Wang and Jiao Qi and Xuqin Wang and Xiyang Liu and Jeff Yan},
year = {2013},
doi = {10.1145/2508859.2516732},
url = {http://doi.acm.org/10.1145/2508859.2516732},
researchr = {https://researchr.org/publication/GaoWQWLY13},
cites = {0},
citedby = {0},
pages = {1075-1086},
booktitle = {2013 ACM SIGSAC Conference on Computer and Communications Security, CCS'13, Berlin, Germany, November 4-8, 2013},
editor = {Ahmad-Reza Sadeghi and Virgil D. Gligor and Moti Yung},
publisher = {ACM},
isbn = {978-1-4503-2477-9},
}