Descripción
Notas:"Based on a series of lectures presented at the N.S.F.-C.B.M.S. Regional Conference on Approximation of Eigenvalues of Differential Operators held during June 26-30, 1972 at Vanderbilt University."
Includes index
Descripción Física:v, 160 p. : il. ; 25 cm
Bibliografía:Bibliography: p. 151-156
ISBN:9780898710120