@book{197889,
	author = {Fischer, Robert J. and Green, Gion.},
	title = {Introduction to security},
	publisher = {Butterworth-Heinemann},
	year = {c2004.},
	address = {Amsterdam},
	edition = {7th ed.},
	url = {http://www.loc.gov/catdir/description/els041/2003052355.html}
}