@article{MZM_2015_97_2_a7,
     author = {E. I. Ponomarenko and A. M. Raigorodskii},
     title = {New {Lower} {Bound} for the {Chromatic} {Number} of a {Rational} {Space} with {One} and {Two} {Forbidden} {Distances}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {255--261},
     publisher = {mathdoc},
     volume = {97},
     number = {2},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2015_97_2_a7/}
}