@book{1296,
	author = {Kappel, F and Schappacher, W.},
	title = {Infinite-dimensional systems},
	publisher = {Springer-Verlag},
	year = {1984},
	series = {Lecture notes in mathematics},
	address = {New York},
	note = {Conference on operator semigroups and application(1983: Retzhof, Austria)}
}