@inproceedings{SEI-1991-CallissT,
	author        = "Frank W. Calliss and Debra L. Trantina",
	booktitle     = "{Proceedings of the Fifth Software Engineering Education Conference}",
	doi           = "10.1007/BFb0024283",
	isbn          = "3-540-54502-6",
	pages         = "25--32",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{A Controlled Software Maintenance Project}",
	volume        = 536,
	year          = 1991,
}