@article{DAN_1977_235_1_a6,
     author = {S. L. Sobolev},
     title = {Coefficients of best quadrature formulas},
     journal = {Doklady Akademii Nauk},
     pages = {34--37},
     publisher = {mathdoc},
     volume = {235},
     number = {1},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_235_1_a6/}
}