Fermat: An Intelligent Social Network for Mathematics. - María Lucía Barrón-Estrada; Ramón Zataraín-Cabada; Rosalio Zataraín-Cabada; Jesús Armando Beltrán Verdugo; Franceli Linney Cibrian Robles; Marsia Irais Quiroz López (Res. Comput. Sci., 2012)