TY  - JOUR
AU  - N. P. Korneichuk
TI  - Duality of extremal problems in function spaces and approximation of functions
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1985
SP  - 195
EP  - 196
VL  - 40
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_1985_40_4_a39/
LA  - en
ID  - RM_1985_40_4_a39
ER  -