@book{9491,
	author = {Daniels, Alan. and Yeates, Donald.},
	title = {Basic systems analysis /},
	publisher = {Pitman Publishing,},
	year = {1984.},
	address = {[S.l.] :},
	edition = {2nd Revised edition.},
	url = {http://www.amazon.com/exec/obidos/ASIN/0273020536/chopaconline-20}
}