@inproceedings{ICSE-1982-PetroneLS,
	acmid         = "807777",
	author        = "Luigi Petrone and Antonio Di Leva and Franco Sirovich",
	booktitle     = "{Proceedings of the Sixth International Conference on Software Engineering}",
	editor        = "Yutaka Ohno and Victor R. Basili and Hajime Enomoto and Koji Kobayashi and Raymond T. Yeh",
	pages         = "350--359",
	publisher     = "{IEEE Computer Society}",
	title         = "{DUAL: An Interactive Tool for Developing Documented Programs by Step-Wise Refinements}",
	year          = 1982,
}