TY - JOUR AU - V. P. Tret'yakov TI - Multiplication of double series in the case when the partial sums of one of the series are unbounded JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1964 SP - 122 EP - 124 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1964_1_a15/ LA - ru ID - IVM_1964_1_a15 ER -