Elias Athanasopoulos, Spyros Antonatos. Enhanced CAPTCHAs: Using Animation to Tell Humans and Computers Apart. In Herbert Leitold, Evangelos P. Markatos, editors, Communications and Multimedia Security, 10th IFIP TC-6 TC-11 International Conference, CMS 2006, Heraklion, Crete, Greece, October 19-21, 2006, Proceedings. Volume 4237 of Lecture Notes in Computer Science, pages 97-108, Springer, 2006. [doi]
@inproceedings{AthanasopoulosA06,
title = {Enhanced CAPTCHAs: Using Animation to Tell Humans and Computers Apart},
author = {Elias Athanasopoulos and Spyros Antonatos},
year = {2006},
doi = {10.1007/11909033_9},
url = {http://dx.doi.org/10.1007/11909033_9},
researchr = {https://researchr.org/publication/AthanasopoulosA06},
cites = {0},
citedby = {0},
pages = {97-108},
booktitle = {Communications and Multimedia Security, 10th IFIP TC-6 TC-11 International Conference, CMS 2006, Heraklion, Crete, Greece, October 19-21, 2006, Proceedings},
editor = {Herbert Leitold and Evangelos P. Markatos},
volume = {4237},
series = {Lecture Notes in Computer Science},
publisher = {Springer},
isbn = {3-540-47820-5},
}