@inproceedings{TAPSOFT-1997-Maibaum,
	author        = "T. S. E. Maibaum",
	booktitle     = "{Proceedings of the Seventh International Joint Conference on Theory and Practice of Software Development}",
	doi           = "10.1007/BFb0030588",
	isbn          = "3-540-62781-2",
	pages         = "40--66",
	publisher     = "{Springer}",
	title         = "{Conservative Extensions, Interpretations Between Theories and All That!}",
	year          = 1997,
}