TY  - JOUR
AU  - A. I. Vol'pert
TI  - The index of boundary value problems for systems of harmonic functions in three independent variables
JO  - Doklady Akademii Nauk
PY  - 1960
SP  - 13
EP  - 15
VL  - 133
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1960_133_1_a1/
LA  - ru
ID  - DAN_1960_133_1_a1
ER  -