@book{bittner02usecase,
	title = {Use Case Modeling},
	author = {Kurt Bittner and Ian Spence},
	publisher = {Addison-Wesley Longman Publishing Co., Inc.},
	url = {http://www.usecasemodeling.com/},
	year = {2002},
	biburl = {http://www.bibsonomy.org/bibtex/22897c941b8ecf84ed7189917d2eeac0a/msn},
	isbn = {0201709139},
	keywords = {cites.dss.r cites.pclass info.refs.books research.conceptual.uml research.conceptual.usecases state.printed }
}