PANTHER: a browsable database of gene products organized by biological function, using curated protein family and subfamily classification. - Paul D. Thomas; Anish Kejariwal; Michael J. Campbell; Huaiyu Mi; Karen Diemer; Nan Guo; Istvan Ladunga; Betty Lazareva-Ulitsky; Anushya Muruganujan; Steven Rabkin; Jody A. Vandergriff; Olivier Doremieux (Nucleic Acids Res., 2003)

On the quality of tree-based protein classification. - Betty Lazareva-Ulitsky; Karen Diemer; Paul D. Thomas (Bioinform., 2005)