%0 Journal Article %A T. P. Lukashenko %T Generalized expansion systems similar to orthogonal ones %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 1998 %P 6-10 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_1998_4_a1/ %G ru %F VMUMM_1998_4_a1