@inproceedings{CAAP-1989-MiglioliMO,
	author        = "Pierangelo Miglioli and Ugo Moscato and Mario Ornaghi",
	booktitle     = "{Proceedings of the Third International Joint Conference on Theory and Practice of Software Development, Volume 1: Colloquium on Trees in Algebra and Programming}",
	doi           = "10.1007/3-540-50939-9_142",
	isbn          = "3-540-50939-9",
	pages         = "337--351",
	publisher     = "{Springer}",
	title         = "{Semi-Constructive Formal Systems and Axiomatization of Abstract Data Types}",
	year          = 1989,
}