1. V. M. Gindilis and S. A. Finogenova, Genetika,12, No. 8, 139 (1976).
2. M. G. Kendall and A. Stuart, The Advanced Theory of Statistics, Vol. 2, London (1979), p. 331.
3. E. T. Lil'in, V. M. Trubnikov, and M. M. Vanyukov, Introduction to Modern Pharmacogenetics [in Russian], Moscow (1984).
4. V. A. Nasonova and A. M. Poverennyi, Ter. Arkh.,39, No. 9, 38 (1967).
5. E. I. Sokolov, P. B. Gofman-Kadochnikov, and E. T. Lil'in, Outlines of Studies of Twins (in Clinical Medicine) [in Russian], Moscow (1980).