@article{MZM_1985_37_1_a3,
     author = {A. P. Petukhov},
     title = {Approximation of discontinuous functions in the {Hausdorff} metric},
     journal = {Matemati\v{c}eskie zametki},
     pages = {25--40},
     publisher = {mathdoc},
     volume = {37},
     number = {1},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1985_37_1_a3/}
}