@article{DAN_1982_264_4_a16,
     author = {M. A. Chahkiev},
     title = {Optimality of equidistant nodes},
     journal = {Doklady Akademii Nauk},
     pages = {836--839},
     publisher = {mathdoc},
     volume = {264},
     number = {4},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1982_264_4_a16/}
}