@article{IIGUM_2020_31_a1,
     author = {A. L. Kazakov and P. D. Lebedev and A. A. Lempert},
     title = {On covering bounded sets by collections of circles of various radii},
     journal = {The Bulletin of Irkutsk State University. Series Mathematics},
     pages = {18--33},
     publisher = {mathdoc},
     volume = {31},
     year = {2020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IIGUM_2020_31_a1/}
}