Kahan, I., and S. Kostyuchko. “CRM Systems As a Tool for Improving Business Efficiency”. COMPUTER-INTEGRATED TECHNOLOGIES: EDUCATION, SCIENCE, PRODUCTION, no. 52 (September 24, 2023): 5-9. Accessed April 16, 2025. https://cit.lntu.edu.ua/index.php/cit/article/view/454.