Рогушина, Ю.В. “Models of Constant User Informational Interests Knowledge Representation in Informational Retrieval Systems”. Proceedings of National Aviation University (archive) 21, no. 3 (March 1, 2004): 90–93. Accessed April 13, 2026. http://jrnl.kai.edu.ua/index.php/visnik/article/view/1035.