@book{31680,
	author = {Lipschutz, Seymour. and Spiegel, Murray R.},
	title = {Vector analysis and an introduction to tensor analysis /},
	publisher = {McGraw-Hill,},
	year = {c2009.},
	series = {Schaum's outline series},
	address = {New York :},
	edition = {2nd ed.},
	note = {Includes index.}
}