Kreyszig, Erwin. Introductory functional analysis with applications / by Erwin Kreyszig. - New York : Wiley, c1978. - xiv, 688 p. : ill. ; 24 cm. Includes index. Bibliography: p. 675-679. ISBN: 9788126511914 Subjects--Topical Terms: Functional analysis. Dewey Class. No.: 515.7 / KRE/I