Faris, William G., 1939- Self-adjoint operators/ William G. Faris. - Berlin ; New York: Springer-Verlag, 1975. - vi, 115 p. ; 25 cm. - Lecture notes in mathematics ; 433. . - Lecture notes in mathematics (Springer-Verlag); 433. . Bibliography: p. [109]-115. ISBN: 0387070303 LCCN: 74032497 //r85 Nat. Bib. No.: GFR*** Subjects--Topical Terms: Selfadjoint operators.Perturbation (Mathematics)Quantum theory. Dewey Class. No.: 510/.8 s 515/.72