TY  - JOUR
AU  - E. A. Volkov
TI  - On methods of refinement using higher-order differences and $h^2$-extrapolations
JO  - Doklady Akademii Nauk
PY  - 1963
SP  - 455
EP  - 458
VL  - 150
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1963_150_3_a0/
LA  - ru
ID  - DAN_1963_150_3_a0
ER  -