@article{MM_2014_26_11_a11,
     author = {T. Kupenova},
     title = {Smooth approximation of functions of two variables},
     journal = {Matemati\v{c}eskoe modelirovanie},
     pages = {78--82},
     publisher = {mathdoc},
     volume = {26},
     number = {11},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MM_2014_26_11_a11/}
}