Azambuja Silveira, Ricardo, Rafaela Lunardi Comarella, Ronaldo Lima Rocha Campos, Jonas Vian, and Fernando De La Prieta. “Learning Objects Recommendation System: Issues and Approaches for Retrieving, Indexing and Recomend Learning Objects”. ADCAIJ: Advances in Distributed Computing and Artificial Intelligence Journal 4, no. 4 (December 24, 2015): 69–82. Accessed April 19, 2024. https://revistas.usal.es/cinco/index.php/2255-2863/article/view/ADCAIJ2015446982.