M. Gerosa, A. Raposo, H. Fuks, and C. Lucena.
" Component-Based Groupware Development Based on the 3C Collaboration Model", in Anais do XX Simpósio Brasileiro de Engenharia de Software, Florianópolis, 2006, pp. 129-144, doi: https://doi.org/10.5753/sbes.2006.21209.