%0 Journal Article %A V. B. Alekseev %T Minimal extensions with simple multiplication for an algebra of second-order matrices %J Diskretnaya Matematika %D 1997 %P 71-82 %V 9 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DM_1997_9_1_a5/ %G ru %F DM_1997_9_1_a5