%0 Journal Article %A V. I. Arnautov %T Properties of covers in the lattice of group topologies for nilpotent groups %J Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica %D 2012 %P 38-44 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/BASM_2012_3_a3/ %G en %F BASM_2012_3_a3