@book{9494,
	author = {Wilken, Sean. and Villiers, Theresa.},
	title = {Wilken and Villiers the law of waiver, variation, and estoppel /},
	publisher = {Oxford University Press,},
	year = {2002.},
	address = {Oxford :},
	edition = {2nd ed.},
	note = {Rev. ed. of: Waiver, variation, and estoppel. c1998.},
	url = {http://www.loc.gov/catdir/enhancements/fy0613/2002192555-d.html}
}