%0 Journal Article %A V. N. Skimel' %T On problems of adequacy of approximate solutions of differential equations %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1999 %P 74-80 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1999_6_a10/ %G ru %F IVM_1999_6_a10