TY  - JOUR
AU  - A. P. Buslaev
TI  - Extremal problems in approximation theory, and nonlinear
JO  - Doklady Akademii Nauk
PY  - 1989
SP  - 1289
EP  - 1294
VL  - 305
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1989_305_6_a0/
LA  - ru
ID  - DAN_1989_305_6_a0
ER  -