TY - JOUR AU - Anton O. Belyakov TI - On necessary optimality conditions for Ramsey-type problems JO - Ural mathematical journal PY - 2019 SP - 24 EP - 30 VL - 5 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/UMJ_2019_5_1_a2/ LA - en ID - UMJ_2019_5_1_a2 ER -