%0 Journal Article %A D. N. Ivanov %T Orthogonal decompositions of associative algebras, and balanced systems of idempotents %J Sbornik. Mathematics %D 1998 %P 1819-1838 %V 189 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1998_189_12_a5/ %G en %F SM_1998_189_12_a5