TY - JOUR AU - Yu. G. Grigor'yan TI - The problem of existence and questions concerning the representation of natural arithmetic graphs JO - Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki PY - 1984 SP - 1751 EP - 1756 VL - 24 IS - 11 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZVMMF_1984_24_11_a16/ LA - ru ID - ZVMMF_1984_24_11_a16 ER -