@article{IVM_1985_6_a12,
     author = {N. I. Merlina},
     title = {Approximation of differentiable functions of several variables by linear operators of a~special type},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {78--81},
     publisher = {mathdoc},
     number = {6},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1985_6_a12/}
}