@book{4452,
	author = {Olver, Peter J.},
	title = {Introduction to Partial Diff erential Equations:},
	publisher = {Springer International Publishing,},
	year = {2014.},
	address = {New York:},
	note = {Includes bibliographical references and (Symbol, Author, Subject) indexes},
	url = {http://172.20.27.22:4000/handle/123456789/182}
}