ajs@prg.ox.ac.uk (Adolfo Socorro) (05/21/91)
I am surprised nobody suggested the following classic: @ARTICLE{Liskov-Zilles:tose75, AUTHOR = "Liskov, Barbara H. and Zilles, Stephen N.", TITLE = "Specification Techniques for Data Abstraction", JOURNAL = "Transactions on Software Engineering", MONTH = "March", YEAR = 1975, VOLUME = 1, NUMBER = 1}