@article{IVM_1978_8_a3,
     author = {N. I. Belaya},
     title = {An algorithm for constructing an optimally exact derivative of a~function in the class $C_{2,L,N}$},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {31--40},
     publisher = {mathdoc},
     number = {8},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1978_8_a3/}
}