Chalyi, Serhii, and Volodymyr Leshchynskyi. “KNOWLEDGE REPRESENTATION IN THE RECOMMENDATION SYSTEM BASED ON THE WHITE BOX PRINCIPLE”. Advanced Information Systems 3, no. 3 (November 1, 2019): 82–86. Accessed July 25, 2024. http://ais.khpi.edu.ua/article/view/2522-9052.2019.3.12.