Barbara Paech
The Four Levels of Use Case Description
REFSQ, 1998.
@inproceedings{REFSQ-1998-Paech,
author = "Barbara Paech",
booktitle = "{Proceedings of the Fourth International Workshop on Requirements Engineering: Foundation for Software Quality}",
isbn = "2-87037-272-8",
pages = "207--218",
publisher = "{Presses Universitaires de Namur}",
title = "{The Four Levels of Use Case Description}",
year = 1998,
}