@inproceedings {conf/smc/PallisAVP04, title = {A probabilistic validation algorithm for Web users{\textquoteright} clusters}, booktitle = {SMC (5)}, year = {2004}, pages = {4129-4134}, publisher = {IEEE}, organization = {IEEE}, isbn = {0-7803-8566-7}, author = {Pallis, George and Angelis, Lefteris and Athena Vakali and Pokorny, Jaroslav} }