1. P. M. Borodin, L. Schuller, and D. K. Belyaev, Genetika, No. 12, 62 (1976).
2. P. F. Rokitskii, Introduction to Statistical Genetics [in Russian], Minsk (1978), pp. 180?227.
3. S. B. Seredenin, in: Phenazepam [in Russian], Kiev (1982), pp. 271?279.
4. S. B. Seredenin and A. A. Vedernikov, Byull. �ksp. Biol. Med., No. 7, 38 (1979).
5. J. Azecher, Anim. Behav.,21, 205 (1973).