@article{CMFD_2013_51_a3,
     author = {A. A. Kokotkin and A. M. Raigorodskii},
     title = {On large subgraphs with small chromatic numbers contained in distance graphs},
     journal = {Contemporary Mathematics. Fundamental Directions},
     pages = {64--73},
     publisher = {mathdoc},
     volume = {51},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CMFD_2013_51_a3/}
}