%0 Journal Article %A Klingenberg, Christian %A Lu, Yunguang %A Zhao, Huijiang %T $L^1$ singular limit for relaxation and viscosity approximations of extended traffic flow models %J Electronic Journal of Differential Equations %D 2003 %V 2003 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2003__2003__a199/ %G en %F EJDE_2003__2003__a199