%0 Journal Article %A S. V. Polin %T Certainly solvable equations on algebraic systems %J Matematičeskie voprosy kriptografii %D 2012 %P 91-125 %V 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MVK_2012_3_a4/ %G ru %F MVK_2012_3_a4