1. Barker WC, Dayhoff MO (1982) Viral src gene products are related to the catalytic chain of mammalian cAMP-dependent protein kinase. Proc Natl Sci USA 79:2836–2839
2. Dayhoff MO (1972) A model of evolutionary change in proteins. Detecting distant relationships: computer methods and results. In: Dayhoff MO (ed) Atlas of protein sequence and structure, vol 5. National Biomedical Research Foundation, Washington, DC, pp 89–110
3. Dayhoff MO (1978) A model of evolutionary change in proteins. Matriees for detecting distant relationships. In: Dayhoff MO (ed) Atlas of protein sequence and structure, vol 5, suppl 3. National Biomedical Research Foundation, Washington, DC, 345–358
4. Dayhoff MO, Barker WC, Hunt LT (1983) Establishing homologies in protein sequences. Methods Enzymol 91:524–545
5. Doolittle RF (1979) Protein evolution. In: Neurath H, Hill RL (eds) The proteins, vol IV. Academic Press, New York, pp 1–118