1. Li, C.C., First Course in Population Genetics, Pacific Grove: Boxwood, 1976.
2. Grant, V., Organismic Evolution, San Francisco: Freeman, 1977.
3. Solbrig, O. and Solbrig, D., Introduction to Population Biology and Evolution, Cambridge: Harvard University Press, 1979.
4. Krasota, V.F. and Lobanov, V.T., Razvedenie sel’skokhozyaistvennykh zhivotnykh (Livestock Breeding), Moscow: Kolos, 1976.
5. Chen, K., Baxter, T., Muir, W.M., et al., Genetic Resources, Genome Mapping and Evolutionary Genomics of the Pigs (Sus scrofa), Int. J. Biol. Sci., 2007, vol. 3, no. 3, pp. 153–165.