Rendle, S., Balby Marinho, L., Nanopoulos, A. & Schmidt-Thieme, L. (2009). Learning optimal ranking with tensor factorization for tag recommendation. KDD '09: Proceedings of the 15th ACM SIGKDD international conference on Knowledge discovery and data mining (p./pp. 727--736), New York, NY, USA: ACM. ISBN: 978-1-60558-495-9