%0 Journal Article %A D. N. Ivanov %T Homogeneous orthogonal decompositions of commutative algebras and Hadamard matrices %J Fundamentalʹnaâ i prikladnaâ matematika %D 1995 %P 1107-1110 %V 1 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/FPM_1995_1_4_a20/ %G ru %F FPM_1995_1_4_a20