Large Time Behavior of Solutions of Hyperbolic Balance laws C. M. Dafermos — 1984 Δελτίο της Ελληνικής Μαθηματικής Εταιρίας
Generalized characteristics uniqueness and regularity of solutions in a hyperbolic system of conservation laws C. M. Dafermos; X. Geng — 1991 Annales de l'I.H.P. Analyse non linéaire