L 1 singular limit for relaxation and viscosity approximations of extended traffic flow models. Klingenberg, Christian; Lu, Yunguang; Zhao, Huijiang — 2003 Electronic Journal of Differential Equations (EJDE) [electronic only]
On the validity of Chapman-Enskog expansions for shock waves with small strength. Bedjaoui, Nabil; Klingenberg, Christian; LeFloch, Philippe G. — 2004 Portugaliae Mathematica. Nova Série