TY - JOUR AU - V. V. Martynyuk TI - Certain applications of the closure operation in the analysis of graphs JO - Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki PY - 1971 SP - 1605 EP - 1607 VL - 11 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZVMMF_1971_11_6_a25/ LA - ru ID - ZVMMF_1971_11_6_a25 ER -