TY  - JOUR
AU  - K. I. Tyurin
TI  - Extremal properties of simple eigenvalues of the Laplace operator with Dirichlet boundary conditions on a ball
JO  - Vestnik Moskovskogo universiteta. Matematika, mehanika
PY  - 1991
SP  - 33
EP  - 37
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/VMUMM_1991_4_a7/
LA  - ru
ID  - VMUMM_1991_4_a7
ER  -