%0 Journal Article %A V. V. Ryzhikov %T Joinings of dynamical systems. Approximations and mixing %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1991 %P 199-200 %V 46 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1991_46_5_a12/ %G en %F RM_1991_46_5_a12