TY - JOUR AU - É. A. Asadullin TI - Tests for convergence of multiple series with positive terms JO - Doklady Akademii Nauk PY - 1961 SP - 529 EP - 531 VL - 136 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1961_136_3_a2/ LA - ru ID - DAN_1961_136_3_a2 ER -