B. Henne, M. Koch, and M. Smith. 18th International Conference on Financial Cryptography and Data Security (FC 2014), volume 8437 of LNCS, Springer, (2014)
B. Henne, and M. Smith. Proceedings of the 2013 International Conference on Financial Cryptography and Data Security (FC13), Workshop on Usable Security, 7862, page 131--148. Springer, (2013)