Kyryliv, B. Y. “AGE AND ORGAN–TISSUE FEATURES THE ACTIVITIES HYDROLYTIC ENZYMES QUAILS”. Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies. Series: Agricultural Sciences, Vol. 18, no. 1, Mar. 2016, pp. 53-59, https://nvlvet.com.ua/index.php/agriculture/article/view/3500.