KDD Cup 2001 Report. - Jie Cheng; Christos Hatzis; Hisashi Hayashi; Mark-A. Krogel; Shinichi Morishita; David Page; Jun Sese (SIGKDD Explor., 2002)

Breast Cancer Heterogeneity Investigation: Multiple k-Means Clustering Approach. - Joanna Tobiasz; Christos Hatzis; Joanna Polanska (BIBE, 2019)