Lipman, DJ; Pearson, WR (1985). "Rapid and sensitive protein similarity searches". Science227 (4693): 1435–41. doi:10.1126/science.2983426. PMID 2983426
Pearson, WR; Lipman, DJ (1988). "Improved tools for biological sequence comparison". Proceedings of the National Academy of Sciences of the United States of America85 (8): 2444–8. doi:10.1073/pnas.85.8.2444. PMC 280013. PMID 3162770