M. Shafiei, und E. Milios. ICDM '06: Proceedings of the Sixth International Conference on Data Mining, Seite 542--551. Washington, DC, USA, IEEE Computer Society, (2006)
I. Dhillon, S. Mallela, und D. Modha. Proceedings of The Ninth ACM SIGKDD International Conference on Knowledge Discovery and Data Mining(KDD-2003), Seite 89--98. (2003)