1. G. I. Azimov, O. P. Belugina, and A. F. Orlov, Fiziol. Zh. SSSR, No. 10, 1215 (1968).
2. I. A. Baryshnikov, in: The Physiology and Biochemistry of Lactation [in Russian], Leningrad (1972), pp. 7?20.
3. A. D. Vladimirova and V. Kh. Konstantinov, in: The Nervous System [in Russian], No. 11, Leningrad (1970), pp. 66?75.
4. I. I. Grachev, in: The Physiology and Biochemistry of Lactation [in Russian], Leningrad (1972), pp. 21?37.
5. M. G. Zaks, The Mammary Gland. Nervous and Hormonal Regulation of Its Development and Function [in Russian], Moscow-Leningrad (1964).