@book{12776,
	author = {Muller-Pfeiffer, Erich and Eastham, M. S.},
	title = {Spectral theory of ordinary differential operations},
	publisher = {Ellis Horwood,},
	year = {1981},
	series = {Ellis Horwood series in Mathematics and its applications.},
	address = {Chichester:},
	note = {"Translation"}
}