TY - JOUR AU - A. Sokolov AU - A. M. Raigorodskiy TI - On rational analogs of Nelson–Hadwiger's and Borsuk's problems JO - Čebyševskij sbornik PY - 2018 SP - 270 EP - 281 VL - 19 IS - 3 UR - http://geodesic.mathdoc.fr/item/CHEB_2018_19_3_a21/ LA - ru ID - CHEB_2018_19_3_a21 ER -