TY - JOUR AU - Z. S. Lozhkina TI - On optimal exact coverings of a graph in the class of weakly dense bases JO - Diskretnaya Matematika PY - 2004 SP - 118 EP - 140 VL - 16 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DM_2004_16_3_a6/ LA - ru ID - DM_2004_16_3_a6 ER -