%0 Journal Article %A A. I. Kostrikin %A Pham Huu Tiep %T Classification of irreducible orthogonal decompositions of simple Lie algebras of type $A_n$ %J Algebra i analiz %D 1991 %P 86-109 %V 3 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/AA_1991_3_3_a4/ %G ru %F AA_1991_3_3_a4