@article {3558,
	title = {User{\textquoteright}s Manual as a Requirements Specification: Case Studies},
	journal = {Requirements Engineering},
	volume = {9},
	year = {2004},
	pages = {67--82},
	doi = {10.1007/s00766-003-0181-1},
	author = {Daniel M. Berry and Khuzaima Daudjee and Jing Dong and Igor Fainchtein and Maria Augusta V. Nelson and Torsten Nelson and Lihua Ou}
}
