V. Teles, and C. de Oliveira. Software Engineering Education and Training. Proceedings. 16th Conference on, page 158--165. Los Alamitos, CA, IEEE Computer Society, (2003)
P. Freeman, A. Wasserman, and R. Fairley. ICSE '76: Proceedings of the 2nd international conference on Software engineering, page 116--122. Los Alamitos, CA, USA, IEEE Computer Society, (1976)