TY  - JOUR
AU  - E. A. Volkov
TI  - The unimprovability of the error estimate of the method of refinements with higher order differences in a certain class of solutions of Poisson's equations
JO  - Differencialʹnye uravneniâ
PY  - 1968
SP  - 136
EP  - 139
VL  - 4
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1968_4_1_a11/
LA  - ru
ID  - DE_1968_4_1_a11
ER  -