@article{IVM_1963_4_a1,
     author = {V. A. Baskakov},
     title = {On a~construction of positive linear operators for functions of two variables},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {7--14},
     publisher = {mathdoc},
     number = {4},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1963_4_a1/}
}