%0 Journal Article %A H.-O. Walther %T Evolution systems for differential equations with variable time lags %J Contemporary Mathematics. Fundamental Directions %D 2013 %P 5-26 %V 48 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMFD_2013_48_a0/ %G ru %F CMFD_2013_48_a0