%0 Journal Article %A V. V. Meleshko %T Hassan Aref (1950-2011) %J Russian journal of nonlinear dynamics %D 2011 %P 691-713 %V 7 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/ND_2011_7_3_a18/ %G ru %F ND_2011_7_3_a18