1. S.F. Altschul, Amino Acid Substitution Matrices from an Information Theoretic Perspective, J. Molecular Biology, 219(1991), pp. 555–565.
2. S.F. Altschul, W. Gish, W. Miller, E.W. Myers, and D.J. Lipman, A Basic Local Alignment Search Tool, J. Molecular Biology, 215(1990), pp. 403–410.
3. P. Argos and M. Vingron, Sensitive Comparison of Protein Amino Acid Sequences, in R.F. Doolittle, ed. Methods in Enzymology Volume 183, Academic Press (1990), pp. 352–365.
4. P. Argos, M. Vingron, and G. Vogt, Protein sequence comparison: methods and significance, Protein Engineering 4(1991), pp. 375–383.
5. W.I. Chang, Approximate Pattern Matching and Biological Applications, Ph.D. thesis, U.C. Berkeley, August 1991. Also available as Computer Science Division Reports UCB/CSD 91/653–654.