@article{SM_1970_11_3_a7,
     author = {S. O. Sinanyan},
     title = {Approximation by polynomials in the mean with respect to area},
     journal = {Sbornik. Mathematics},
     pages = {411--421},
     publisher = {mathdoc},
     volume = {11},
     number = {3},
     year = {1970},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1970_11_3_a7/}
}