M. F. Ferreira, M. L. R. Varela, R. A. Ribeiro, and A. M. Almeida. “Recommendation Systems As a Success Factor in On-Line Shopping”. Journal of Network and Innovative Computing 1 (October 1, 2013): 10. Accessed October 2, 2024. https://cspub-jnic.org/index.php/jnic/article/view/37.