@article{VNGU_2014_14_1_a8,
     author = {I. I. Takhonov},
     title = {Multilevel {Regular} {Coverings} of the {Plane} by {Discs}},
     journal = {Sibirskij \v{z}urnal \v{c}istoj i prikladnoj matematiki},
     pages = {112--128},
     publisher = {mathdoc},
     volume = {14},
     number = {1},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VNGU_2014_14_1_a8/}
}