%0 Journal Article %A O. D. Artemovych %T Differentially trivial and rigid right semi-artinian rings %J Algebra and discrete mathematics %D 2004 %P 17-22 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/ADM_2004_2_a3/ %G en %F ADM_2004_2_a3