R, Mahesh T R, V Vivek, and V Vinoth Kumar. “Recommendation Systems: Different Techniques, Challenges and Future Directions”. International Journal of Information Technology, Research and Applications 1, no. 2 (August 25, 2022): 1–8. Accessed October 19, 2025. https://www.ijitra.com/index.php/ijitra/article/view/17.