@book{4034,
	author = {Laudder, M. A. (ed.) and Bang, F. B. (ed.)},
	title = {Advances in virus research (vol-20)},
	publisher = {Academic Press},
	year = {1976},
	series = {20},
	address = {New York},
	note = {6560 & 24.12.1976}
}