@article{SJIM_2005_8_1_a5,
     author = {A. V. Gavrilov},
     title = {On optimal quadrature formulas},
     journal = {Sibirskij \v{z}urnal industrialʹnoj matematiki},
     pages = {50--52},
     publisher = {mathdoc},
     volume = {8},
     number = {1},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SJIM_2005_8_1_a5/}
}