1. Dobzhansky, T., and Pavlovsky, O. (1955). An extreme case of heterosis in Central American population of Drosophila tropicalis. Proc. Natl. Acad. Sci. USA 41289.
2. Gontcharenko, G., and Zakharov, I. (1981). A phosphoglucomutase locus in D. virilis. Dros. Inform. Serv. 5647.
3. Korochkin, L., Matveeva, N., Golubovsky, M., and Evgeniev, M. (1973). Genetics of esterases in Drosophila. I. Characteristics of esterase pattern in D. virilis, D. texana, D. littoralis, and their hybrids. Biochem. Genet. 10363.
4. Korochkin, L., Aronshtam, A., Serov, O., Pudovkin, A., Poliakova, E., Mantchenko, G., Maletzky, S., and Borkin, L. (1977). Isozyme Genetics Nauka, Moscow, (Russian).
5. Lewontin, R. (1974). The Genetic Basis of Evolutionary Change Columbia University Press, New York and London.