@book{20760,
	author = {Dirac, P. A. M. (Paul Adrien Maurice), 1902-1984},
	title = {General theory of relativity /},
	publisher = {John Wiley and sons.,},
	year = {1975.},
	address = {New York :},
	note = {"A Wiley-Interscience publication."
Based on a course of lectures given at Florida State University, Physics Dept.
Includes index.}
}