@book{11897,
	author = {Azizov, T. Ya. and Iokhvidov, I. S. and Iokhvidov, I. S. ; jt. auth.},
	title = {Linear operators in spaces with an indefinite metric},
	publisher = {John Wiley},
	year = {1989},
	series = {Pure and Applied Mathematics},
	address = {Chichester},
	note = {"Tr. from the Russian by E. R. Dawson".}
}