The following publications are possibly variants of this publication:
- PIR-ALN: a database of protein sequence alignmentsGeetha Y. Srinivasarao, Lai-Su L. Yeh, Christopher R. Marzec, Bruce C. Orcutt, Winona C. Barker. bioinformatics, 15(5):382-390, 1999.
- The PIR-International Protein Sequence DatabaseDavid G. George, Winona C. Barker, Hans-Werner Mewes, Friedhelm Pfeiffer, Akira Tsugita. nar, 24(1):17-20, 1996.
- The PIR-International Protein Sequence DatabaseWinona C. Barker, John S. Garavelli, Daniel H. Haft, Lois T. Hunt, Christopher R. Marzec, Bruce C. Orcutt, Geetha Y. Srinivasarao, Lai-Su L. Yeh, Robert S. Ledley, Hans-Werner Mewes, Friedhelm Pfeiffer, Akira Tsugita. nar, 26(1):27-32, 1998.
- The PIR-International Protein Sequence DatabaseWinona C. Barker, John S. Garavelli, Peter B. McGarvey, Christopher R. Marzec, Bruce C. Orcutt, Geetha Y. Srinivasarao, Lai-Su L. Yeh, Robert S. Ledley, Hans-Werner Mewes, Friedhelm Pfeiffer, Akira Tsugita, Cathy H. Wu. nar, 27(1):39-43, 1999.
- The Protein Information Resource (PIR) and the PIR-International Protein Sequence DatabaseDavid G. George, Robert J. Dodson, John S. Garavelli, Daniel H. Haft, Lois T. Hunt, Christopher R. Marzec, Bruce C. Orcutt, Kathryn E. Sidman, Geetha Y. Srinivasarao, Lai-Su L. Yeh, Leslie Arminski, Robert S. Ledley, Akira Tsugita, Winona C. Barker. nar, 25(1):24-28, 1997.