TY  - JOUR
AU  - È. M. Saak
TI  - The solvability of the Dirichlet problem for an elliptic equation of order $21$ in the class $W_2^{(2l)}$
JO  - Differencialʹnye uravneniâ
PY  - 1973
SP  - 2048
EP  - 2051
VL  - 9
IS  - 11
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1973_9_11_a13/
LA  - ru
ID  - DE_1973_9_11_a13
ER  -