TY  - JOUR
AU  - Yu. N. Subbotin
TI  - Approximation by spline functions, and estimates of widths
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1971
SP  - 35
EP  - 60
VL  - 109
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TM_1971_109_a3/
LA  - ru
ID  - TM_1971_109_a3
ER  -