Sousa, Claucio, Marcello Freitas, Geilson Andrade, Thiago Moura, and Damires Souza.
" Ask4In: A Contextually Sensitive Questions and Answers to Support Learning in Disciplines." <em>Proceedings of the 3rd Brazilian Workshop on Social Network Analysis and Mining,
Brasília, 2014</em>. SBC, 2014,  
pp.   93-104.