@article{DANMA_2021_499_a9,
     author = {A. D. Tolmachev and D. S. Protasov},
     title = {Covering planar sets},
     journal = {Doklady Rossijskoj akademii nauk. Matematika, informatika, processy upravleni\^a},
     pages = {44--48},
     publisher = {mathdoc},
     volume = {499},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DANMA_2021_499_a9/}
}