@article{MZM_1993_54_1_a2,
     author = {Yu. V. Kryakin},
     title = {On exact constants in the {Whitney} theorem},
     journal = {Matemati\v{c}eskie zametki},
     pages = {34--51},
     publisher = {mathdoc},
     volume = {54},
     number = {1},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1993_54_1_a2/}
}