SUPFAM - a database of potential protein superfamily relationships derived by comparing sequence-based and structure-based families: implications for structural genomics and function annotation in genomes. - Shashi B. Pandit; Dilip Gosar; S. Abhiman; S. Sujatha; Sayali S. Dixit; Natasha S. Mhatre; Ramanathan Sowdhamini; Narayanaswamy Srinivasan (Nucleic Acids Res., 2002)