%0 Journal Article %A V. I. Drobyshevich %T On the convergence of methods with different time steps in %J Doklady Akademii Nauk %D 1996 %P 315-318 %V 346 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1996_346_3_a6/ %G ru %F DAN_1996_346_3_a6