@article{articlee2b3cf22,
title   = {The 3C cooperation model applied to the classical requirement analysis},
author = {Gava, Vagner Luiz and Spínola, Mauro and Tonini, Antonio Carlos and Cárdenas Medina, José Manuel},
year = {2012},
doi = {10.4301/S1807-17752012000200003},
journal   = {JISTEM Journal of Information Systems and Technology Management}
}