TY  - JOUR
AU  - V. A. Il'in
TI  - On fundamental function systems of Laplace's operator in an arbitrary region and on asymptotic estimates of the fundamental numbers
JO  - Doklady Akademii Nauk
PY  - 1967
SP  - 25
EP  - 28
VL  - 177
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1967_177_1_a5/
LA  - ru
ID  - DAN_1967_177_1_a5
ER  -