@article{IM2_1974_8_3_a8,
     author = {V. P. Motornyi},
     title = {On the best quadrature formula of the form $\sum_{k=1}^np_kf(x_k)$ for some classes of differentiable periodic functions},
     journal = {Izvestiya. Mathematics },
     pages = {591--620},
     publisher = {mathdoc},
     volume = {8},
     number = {3},
     year = {1974},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1974_8_3_a8/}
}