Bilyk, O., Slyvka, N., Gutyj, B., Dronyk, H., & Sukhorska, O. (2017). Substantiation of the method of protein extraction from sheep and cow whey for producing the cheese "Urda". Eastern-European Journal of Enterprise Technologies, 3(11 (87), 18–22. https://doi.org/10.15587/1729-4061.2017.103548