V. M. Kalinin, O. V. Shalaevskii, Studies in the classic problems of probability theory and mathematical statistics. Part II, Zap. Nauchn. Sem. LOMI, 26, 1972, 123 ñ. http://mi.mathnet.ru/book555
V. M. Kalinin, O. V. Shalaevskii, Studies in the classic problems of probability theory and mathematical statistics, Zap. Nauchn. Sem. LOMI, 13, 1969, 248 ñ. http://mi.mathnet.ru/book554