@article{IVM_2016_4_a1,
     author = {I. Yu. Vygodchikova},
     title = {Approximation of double-valued function by an algebraic polynomial},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {8--13},
     year = {2016},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2016_4_a1/}
}