@book{71767,
	author = {Peierls, Rudolf E. and Conference on Methods and Problems of Theoretical Physics},
	title = {Methods and problems of theoretical physics :},
	publisher = {North-Holland Pub. Co.,},
	year = {1970.},
	address = {Amsterdam :},
	note = {Distributed in the U.S.A. by American Elsevier Pub. Co.}
}