TY  - JOUR
AU  - A. Weinstein
TI  - The intermediate problems and the maximum-minimum theory of eigenvalues
JO  - Matematika
PY  - 1964
SP  - 91
EP  - 101
VL  - 8
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MAT_1964_8_5_a8/
LA  - ru
ID  - MAT_1964_8_5_a8
ER  -