@book{121734,
	author = {Dirac, P. A. M.},
	title = {The principles of quantum mechanics /},
	publisher = {Clarendon Press,},
	year = {1986, c1958.},
	series = {The International series of monographs on physics ;},
	address = {Oxford :},
	edition = {4th ed. (rev.)},
	note = {Issued with various printing dates.}
}