@article{ZVMMF_1982_22_5_a21,
     author = {\`E. N. Kolesnikova and V. S. Yuferev},
     title = {Difference approximations of derivatives, and polynomial splines},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1241--1245},
     publisher = {mathdoc},
     volume = {22},
     number = {5},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1982_22_5_a21/}
}