@article {537,
	title = {The Spring model for knowledge based systems analysis: A case study},
	journal = {Data Base},
	volume = {23},
	number = {2},
	year = {1992},
	pages = {1-5},
	isbn = {0095-0033},
	url = {Database1992.pdf},
	author = {Edgar A. Whitley and Angeliki Poulymenakou and Tony Cornford}
}
