@book{11658,
	author = {Novozhilov, I͡U. V. and Tulub, A. V.,},
	title = {The method of functionals in the quantum theory of fields / },
	publisher = {Gordon and Breach, },
	year = {c1961.},
	series = {Russian tracts on advanced mathematics and physics ;},
	address = {New York : }
}