2008
Efstathios Stamatatos, B. Stein, M. Koppel, YES, International Workshop on Uncovering Plagiarism, Authorship, and Social Software Misuse (PAN-08)   
2007
Efstathios Stamatatos, B. Stein, M. Koppel, YES, International Workshop on Plagiarism Analysis, Authorship Attribution, and Near-Duplicate Detection (PAN-07)