@book{7890588,
	author = {Ginzburg, I. F. and Perlovskij, L. I.},
	title = {Backward πN-scattering and possible existence of elementary nucleon},
	year = {1972},
	series = {Preprint},
	address = {Novosibirsk},
	note = {Рез. на рус. яз.}
}