@inproceedings{OOPSLA-1989-BlockC,
	author        = "F. P. Block and N. C. Chan",
	booktitle     = "{Proceedings of the Fourth Conference on Object-Oriented Programming, Systems, Languages and Applications}",
	doi           = "10.1145/74877.74893",
	editor        = "George Bosworth",
	isbn          = "0-89791-333-7",
	pages         = "151--157",
	publisher     = "{ACM}",
	title         = "{An Extended Frame Language}",
	year          = 1989,
}