Protein Sequence Annotation in the Genome Era: The Annotation Concept of SWISS-PROT + TREMBL. - Rolf Apweiler; Alain Gateau; Sergio Contrino; Maria Jesus Martin; Vivien Junker; Claire O'Donovan; Fiona Lang; Nicoletta Mitaritonna; Stephanie Kappus; Amos Bairoch (ISMB, 1997)