Bakhshandegan Moghaddam, Farshad, and Bahram Sadeghi Bigham. “EXTRA: EXpertise-Boosted Model for Trust-Based Recommendation System Based on Supervised Random Walk”. COMPUTING AND INFORMATICS 37, no. 5 (November 21, 2018): 1209–1230. Accessed March 2, 2024. https://www.cai.sk/ojs/index.php/cai/article/view/2018_5_1209.