@article{IIGUM_2013_6_3_a5,
     author = {P. D. Lebedev and D. S. Bukharov},
     title = {Approximation of polygons with the best set of circles},
     journal = {The Bulletin of Irkutsk State University. Series Mathematics},
     pages = {72--87},
     publisher = {mathdoc},
     volume = {6},
     number = {3},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IIGUM_2013_6_3_a5/}
}