Lytvyn, Vasyl, Victoria Vysotska, Viktor Shatskykh, Ihor Kohut, Oksana Petruchenko, Lyudmyla Dzyubyk, Vitaliy Bobrivetc, Valentyna Panasyuk, Svitlana Sachenko, and Myroslav Komar. 2019. “Design of a Recommendation System Based on Collaborative Filtering and Machine Learning Considering Personal Needs of the User”. Eastern-European Journal of Enterprise Technologies 4 (2 (100):6-28. https://doi.org/10.15587/1729-4061.2019.175507.