§ Sheffy B.E. Nutrition and Nutritional disorders / Vet. Clin. North Am. — 1978. — V. 10.
§ Silva L.D.M., Onclin K., Snaps F. et at. Laparoscopic intrauterine insemination in the bitch / Theriogenology. — 1995. — V. 43. — № 3.
§ Smith F.O. Update on freezing canine semen / Current Veterinary Therapy / Ed. by R. Kirk. — Philadelphia etc.: Saunders Co., 1986.
§ Sokoiowsky J.H. Reproductive patterns in the bitch / Vet. Clin. North Am. — 1977. — V. 7. — № 4.
§ Stabbs W.P., Salmeri K.R., Bloomberg M.S. Early neutering of the dog and cat / Kirk' Current Veterinary Therapy XII. Small Animal Practice / Ed. by J.D. Bonagura, R.W. Kirk. — Philadelphia etc.: Saunders Co., 1995.
§ Tsuitsui T., Kawakami E., Murao I. et al. Transport of spermatozoa in the reproductive of the bitch: Observation through the uterine fistulas / Japan. J. Vet. Sci. — 1989. — V. 51. — № 3.
§ White L.G. Secretions of the male reproductive tract and seminal plasma / Reproduction in farm animals / Ed. by Hafez S.S. — London: Bailliere Tindall, 1980.
§ Wichell J.J., Whitacre M.D., Yates D.J. et al. Comparision of the effects of РGF2a and bromcriptine in pregnant beagle bitches / Theriogenology. — 1990. — Vol. 33. — № 3.
§ Woody В.J. Prevention of estrus and pregnancy / Handbook of small animal practice / Ed. by R.V. Morgan. 2nd ed. — Philadelphia etc.: Saunders Co., 1988.
