@article{MZM_1993_53_5_a17,
     author = {Yu. V. Kryakin},
     title = {The {Whitney} constants are bounded by two},
     journal = {Matemati\v{c}eskie zametki},
     pages = {158--160},
     publisher = {mathdoc},
     volume = {53},
     number = {5},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1993_53_5_a17/}
}