@book{7455,
	author = {Spiegel, Murray R.},
	title = {Schaum's outline of theory and problems of vector analysis and an introduction to tensor analysis /},
	publisher = {McGwraw Hill, Inc.,},
	year = {1974.},
	series = {Schaum's outline series},
	address = {New York :},
	edition = {SI (Metric) ed.}
}