@article{TIMM_2013_19_4_a25,
     author = {V. N. Ushakov and A. N. Kotel'nikova and A. G. Malev},
     title = {On estimation of the stability defect of the sets with piecewise smooth border},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {250--266},
     publisher = {mathdoc},
     volume = {19},
     number = {4},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2013_19_4_a25/}
}