@article{ZNSL_2002_293_a0,
     author = {P. A. Golovach},
     title = {Systems of pair of $q$-distant representatives and graph colorings},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {5--25},
     year = {2002},
     volume = {293},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2002_293_a0/}
}