@article{SM_1995_81_2_a1,
     author = {Yu. V. Kryakin},
     title = {On {Whitney's} theorem and constants},
     journal = {Sbornik. Mathematics},
     pages = {281--295},
     publisher = {mathdoc},
     volume = {81},
     number = {2},
     year = {1995},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1995_81_2_a1/}
}