Velesyk, T., R. Sachuk, B. Gutyj, A. Kushniruk, V. Pepko, and O. Katsaraba. “Quality Control of Butter”. Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies. Series: Agricultural sciences 23, no. 95 (December 11, 2021): 114-121. Accessed May 21, 2022. https://nvlvet.com.ua/index.php/agriculture/article/view/4251.