TY  - JOUR
AU  - V. A. Il'in
TI  - A system of classical eigenfunctions of a linear self-adjoint elliptic operator with discontinuous coefficients
JO  - Doklady Akademii Nauk
PY  - 1961
SP  - 272
EP  - 275
VL  - 137
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1961_137_2_a5/
LA  - ru
ID  - DAN_1961_137_2_a5
ER  -