@article{IVM_1975_3_a7,
     author = {N. E. Lushpai},
     title = {Best quadrature formulae for certain classes of functions with integrable $r$th derivative},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {59--71},
     publisher = {mathdoc},
     number = {3},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1975_3_a7/}
}