Figueira Filho, F., 		Geus, P., & 		Albuquerque, J.
(2009).
 A recommendation system for web discussion forums based on expertise estimation and collaborative content classification.
In <em>Proceedings of the 5th Brazilian Symposium on Information Systems</em>, (pp. 306-313). Porto Alegre: SBC.
doi:10.5753/sbsi.2009.6188