Berberian, Sterling K., 1926- Notes on spectral theory / by Sterling K. Berberian. - Princeton, N.J. : Van Nostrand 1966. - 121 p. ; 20 cm. - Van Nostrand mathematical studies, 5 . - no. 5. Van Nostrand mathematical studies ; . Includes index. Bibliography: p. 117-118. Subjects--Topical Terms: Spectral theory (Mathematics) Dewey Class. No.: 513.8 / BEN 1966