TY  - BOOK
AU  - Weinstein,Alexander
AU  - Stenger,William
TI  - Methods of intermediate problems for eigenvalues: theory and ramifications
T2  - Mathematics in science and engineering
SN  - 0127424504
AV  - QA316 .W45
U1  - 515/.64 
PY  - 1972///
CY  - New York
PB  - Academic Press
KW  - Calculus of variations
KW  - Local
KW  - Eigenvalues
N1  - Bibliography: p. 221-231
ER  -