@article{MT_2000_3_1_a5,
     author = {R. N. Shmatkov},
     title = {On {Coloring} {Polygon-Circle} {Graphs} with {Clique} {Number~2}},
     journal = {Matemati\v{c}eskie trudy},
     pages = {197--211},
     publisher = {mathdoc},
     volume = {3},
     number = {1},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MT_2000_3_1_a5/}
}