@book{50836,
	author = {Yefimov, N. V. and Translated and edited, by A. Shenitzer.},
	title = {Quadratic forms and matrices :},
	publisher = {Academic Press,},
	year = {1964},
	series = {Academic paperbacks. Mathematics},
	address = {New York :},
	note = {A supplement to the author's Short course in analytic geometry.}
}