%0 Journal Article %A A. Rajhi %T Groups whose lattices of normal subgroups are~factorial %J Algebra and discrete mathematics %D 2020 %P 239-253 %V 30 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/ADM_2020_30_2_a7/ %G en %F ADM_2020_30_2_a7