TY - JOUR TI - About serial ``Proceeding on Discrete Mathematics'' JO - Diskretnaya Matematika PY - 2006 SP - 159 EP - 160 VL - 18 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DM_2006_18_2_a12/ LA - ru ID - DM_2006_18_2_a12 ER -