TY - JOUR AU - A. I. Kozko TI - On some convergence tests for alternating series and constant sign series JO - Čebyševskij sbornik PY - 2017 SP - 123 EP - 133 VL - 18 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CHEB_2017_18_1_a7/ LA - ru ID - CHEB_2017_18_1_a7 ER -