@book{3154,
	author = {Kustner, W Gellert H. and Hellwich, M.},
	title = {The VNR Concise Encyclopedia of Mathematics },
	publisher = {Van Nostrand Reinhold Company},
	year = {1977.},
	address = {New York},
	url = {http://10.10.170.122:8080/browse/book/27335}
}