@book{5816179,
	author = {Коллей, Е. and Коллей, В.},
	title = {Spin wave stiffness constant of narrow-band ferromagnetic alloys with random hopping},
	publisher = {Б. и.},
	year = {1978},
	series = {Объединенный институт ядерных исследований. Дубна},
	address = {Дубна}
}