%0 Journal Article %A L. A. Beklaryan %T A variational problem with retarded argument and its relation to %J Doklady Akademii Nauk %D 1983 %P 1036-1040 %V 271 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1983_271_5_a1/ %G ru %F DAN_1983_271_5_a1