@book{50823,
	author = {Radjavi, Heyder and Radjavi, Heydar},
	title = {Invariant Subspaces},
	publisher = { : Springer-Verlag, },
	year = {1973.},
	series = {Ergebnisse der Mathematik und ihrer Grenzgebiete, Bd. 77.},
	address = {New York}
}