A functional hierarchical organization of the protein sequence space. - Noam Kaplan; Moriah Friedlich; Menachem Fromer; Michal Linial (BMC Bioinform., 2004)

ProtoNet 4.0: A hierarchical classification of one million protein sequences. - Noam Kaplan; Ori Sasson; Uri Inbar; Moriah Friedlich; Menachem Fromer; Hillel Fleischer; Elon Portugaly; Nathan Linial; Michal Linial (Nucleic Acids Res., 2005)