TY  - JOUR
AU  - A. A. Koshelev
TI  - The best $L_p$ approximation of the Laplace operator by linear bounded operators in the classes of functions of two and three variables
JO  - Trudy Instituta matematiki i mehaniki
PY  - 2011
SP  - 217
EP  - 224
VL  - 17
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TIMM_2011_17_3_a20/
LA  - ru
ID  - TIMM_2011_17_3_a20
ER  -