TY  - JOUR
AU  - N. P. Korneichuk
AU  - N. E. Lushpai
TI  - Best quadrature formulas for classes of differentiable functions and piecewise-polynomial approximation
JO  - Izvestiya. Mathematics 
PY  - 1969
SP  - 1335
EP  - 1355
VL  - 3
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1969_3_6_a10/
LA  - en
ID  - IM2_1969_3_6_a10
ER  -