R. Peris, C. Flores, Marta, and 'Angel. ITiCSE '96: Proceedings of the 1st conference on Integrating technology into computer science education, page 36--38. New York, NY, USA, ACM Press, (1996)
A. Moreno, N. Myller, M. Ari, and E. Sutinen. ITiCSE '04: Proceedings of the 9th annual SIGCSE conference on Innovation and technology in computer science education, page 265. New York, NY, USA, ACM Press, (2004)
N. Ragonis, and M. Ari. SIGCSE '05: Proceedings of the 36th SIGCSE technical symposium on Computer science education, page 226--230. New York, NY, USA, ACM Press, (2005)