@article{SM_1967_2_4_a9,
     author = {A. A. Gon\v{c}ar},
     title = {On the rapidity of rational approximation of continuous functions with characteristic singularities},
     journal = {Sbornik. Mathematics},
     pages = {561--568},
     year = {1967},
     volume = {2},
     number = {4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1967_2_4_a9/}
}