TY  - JOUR
AU  - V. V. Arestov
AU  - A. A. Seleznev
TI  - Best $L^2$-Extension of Algebraic Polynomials from the Unit Euclidean Sphere to a Concentric Sphere
JO  - Trudy Instituta matematiki i mehaniki
PY  - 2020
SP  - 47
EP  - 55
VL  - 26
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TIMM_2020_26_2_a2/
LA  - ru
ID  - TIMM_2020_26_2_a2
ER  -