TY - JOUR AU - M. B. Abrosimov TI - Some questions on minimal extensions of graphs JO - Izvestiya of Saratov University. Mathematics. Mechanics. Informatics PY - 2006 SP - 86 EP - 91 VL - 6 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ISU_2006_6_1_a9/ LA - ru ID - ISU_2006_6_1_a9 ER -