Variational methods for eigenvalue problems : an introduction to the methods of Rayleigh, Ritz, Weinstein, and Aronszajn /
Gould, Sydney H.(Sydney Henry),1909-
New York : Dover,
1995.
"An unabridged republication of the work originally published by the University of Toronto Press, Toronto, in 1957 as part of the Mathematical expositions series, no. 10"--T.p. verso.
Includes bibliographical references (p. 173-176) and index.
Calculus of variations.
Differential equations.
Vibration.