TY  - JOUR
AU  - V. I. Burenkov
TI  - Approximation by infinitely differentiable functions with preservation of boundary values
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1987
SP  - 68
EP  - 70
VL  - 180
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TM_1987_180_a32/
LA  - ru
ID  - TM_1987_180_a32
ER  -