@article{IM2_1995_59_4_a4,
     author = {S. N. Kudryavtsev},
     title = {Diameters of classes of smooth functions},
     journal = {Izvestiya. Mathematics },
     pages = {741--764},
     publisher = {mathdoc},
     volume = {59},
     number = {4},
     year = {1995},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1995_59_4_a4/}
}