@book{30290,
	author = {Dacorogna, Bernard. and Marcellini, Paolo.},
	title = {Implicit partial differential equations /},
	publisher = {Birkh�user,},
	year = {1999.},
	series = {Progress in nonlinear differential equations and their applications.},
	address = {[S.l.] :},
	edition = {1999th ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/0817641211/chopaconline-20}
}