TY  - BOOK
AU  - Rellich, Franz.
AU  - Berkowitz, J.,
TI  - Perturbation theory of eigenvalue problems
T2  - Notes on mathematics and its applications
U1  - 515.7 23
PY  - 1969///
CY  - New York
PB  - Gordon and Breach Science Pub.
KW  - Functional analysis.
KW  - Perturbation (Mathematics)
KW  - Eigenvalues
N1  - Includes bibliographical references and index; Introduction--
Chapter I. Finite dimensional space--
Chapter II. Perturbation of the discrete spectrum--

Appendix--
Bibliography--
Index
N2  - Taken from lectures given by Professor Rellich at New York University in 1953
ER  -