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Gad Getz, Erel Levine, Eytan Domany. Coupled two-way clustering analysis of gene microarray data. _Proceedings of the National Academy of Sciences_ **97**, 12079-12084 (2000). Amir Ben-Dor, Laurakay Bruhn, Nir Friedman, Iftach Nachman, Michèl Schummer, Zohar Yakhini. Tissue Classification with Gene Expression Profiles. _Journal of Computational Biology_ **7**, 559–583 (2000).