@article{ZVMMF_2006_46_6_a9,
     author = {D. A. Shirobokov},
     title = {On the construction of second-to-fourth-order accurate approximations of spatial derivatives on an arbitrary set of points},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1074--1095},
     year = {2006},
     volume = {46},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_2006_46_6_a9/}
}