@inproceedings{97162b9ebd2b4424b5de5d32d7c5939c,
title = "Using Human Interactive Proofs to secure human-machine interactions via untrusted intermediaries",
author = "Mitchell, {Chris J}",
year = "2009",
doi = "10.1007/978-3-642-04904-0_22",
language = "English",
series = "Lecture Notes in Computer Science",
publisher = "Springer-Verlag",
pages = "164--170",
editor = "Bruce Christianson and B Crispo and Malcolm, {James A} and Michael Roe",
booktitle = "Security Protocols: 14th International Workshop, Cambridge, UK, March 27-29 2006: Revised Selected Papers",
}