S. Papadopoulos, Y. Kompatsiaris, and A. Vakali. Proceedings of the 12th international conference on Data warehousing and knowledge discovery, page 65--76. Berlin, Heidelberg, Springer-Verlag, (2010)
A. Java, A. Joshi, and T. Finin. Proceedings of the Tenth Workshop on Web Mining and Web Usage Analysis (WebKDD), ACM, (August 2008)Held in conjunction with The 14th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining (KDD 2008).