%0 Journal Article %A A. N. Rumyantsev %T A~constructive investigation of differential equations with arbitrary deviation of argument %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1997 %P 25-31 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1997_6_a2/ %G ru %F IVM_1997_6_a2