@article{MZM_2009_85_1_a15,
     author = {V. S. Romanyuk},
     title = {Nonlinear {Diameters} of {Classes} of {Smooth} {Functions} {Defined} on the {Unit} {Sphere} in~$\mathbb R^{d}$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {147--152},
     publisher = {mathdoc},
     volume = {85},
     number = {1},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2009_85_1_a15/}
}