@article{DAN_1972_205_4_a11,
     author = {N. A. Shirokov},
     title = {On uniform approximation of functions on closed sets having a finite number of corner points with nonzero exterior angles},
     journal = {Doklady Akademii Nauk},
     pages = {798--800},
     publisher = {mathdoc},
     volume = {205},
     number = {4},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1972_205_4_a11/}
}