%0 Journal Article %A V. I. Arnautov %A G. N. Ermakova %T Properties of finite unrefinable chains of ring topologies for nilpotent rings %J Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica %D 2018 %P 67-75 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/BASM_2018_1_a5/ %G en %F BASM_2018_1_a5