Weidmann, Joachim. Linear operators in Hilbert spaces / Joachim Weidmann ; translated by Joseph Sz ucs. - New York : Springer-Verlag, 1980. - xiii, 402 p. ; 25 cm. - Graduate texts in mathematics 68. . Translation of Lineare Operatoren in Hilbertr aumen. Includes indexes and bibliography : p. 387-389. engger. ISBN: 0387904271 Subjects--Topical Terms: Linear operators.Hilbert space.