@article{MZM_2004_76_2_a6,
     author = {E. N. Sosov},
     title = {Best {Approximations} of {Convex} {Compact} {Sets} by {Balls} in the {Hausdorff} {Metric}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {226--236},
     publisher = {mathdoc},
     volume = {76},
     number = {2},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2004_76_2_a6/}
}