1. Zelenevsky, N. V. Animal anatomy: Textbook for universities / N. V. Zelenevsky, M. V. Shchipakin. – 3rd edition, stereotypical. – St. Petersburg: Publishing House "Lan", 2022:484 [in Russ.] https://www.elibrary.ru/item.asp?id=48047107
2. Practical recommendations on reproduction of cattle / K. V. Plemyashov, G. M. Andreev, P. G. Zakharov [et al.]. – St. Petersburg: St. Petersburg State Academy of Veterinary Medicine, 2008:90 [in Russ.] https://www.elibrary.ru/item.asp?id=21753377
3. The main patterns of transformations of the organs of the reproductive system during the evolution of vertebrates: comparative morphofunctional characteristics / N. N. Shevlyuk, T. Zh. Umbetov, E. V. Blinova [et al.] // Conference series of the Marat Ospanov State Medical University, Aktobe, 05-06 October 2017. Volume I. – Aktobe: West Kazakhstan State Medical University named after Marat Ospanov, 2017:255-258. [in Russ.] https://www.elibrary.ru/item.asp?id=3563767
4. Vascularization and innervation of the adnexal genitalglands (AGG) of boars / N. Zelenevsky, M. Shchipakin, A. Prusakov [et al.] // Theriogenology. 2019:137:137. https://www.elibrary.ru/item.asp?id=41532460
5. Gushchin, Ya. A. The effect of fixing fluids on the microscopic structure of organs of small laboratory animals / Ya. A. Gushchin, AA Muzhikyan // International Bulletin of Veterinary Medicine. 2014:3:88-95. [in Russ.] https://www.elibrary.ru/item.asp?id=22307725