@conference {721, title = {Fingerprinting a flow of messages to an anonymous server.}, booktitle = {IEEE International Workshop on Information Forensics and Security (WIFS)}, year = {2012}, month = {12/2012}, pages = {97{\textendash}102}, address = {Tenerife, Spain}, author = {Juan A. Elices and Fernando P{\'e}rez-Gonz{\'a}lez} }