Zhao, Yueyu; Mei, Fengxiang On symmetry and invariant of dynamical systems. (Chinese. English summary) Zbl 0786.70013 Adv. Mech. 23, No. 3, 360-372 (1993). MSC: 70H33 37C80 70-02 PDFBibTeX XMLCite \textit{Y. Zhao} and \textit{F. Mei}, Adv. Mech. 23, No. 3, 360--372 (1993; Zbl 0786.70013)
Le Floch, Philippe; Liu, Tai-Ping Existence theory for nonlinear hyperbolic systems in nonconservative form. (English) Zbl 0804.35086 Forum Math. 5, No. 3, 261-280 (1993). Reviewer: H.Lange (Köln) MSC: 35L80 PDFBibTeX XMLCite \textit{P. Le Floch} and \textit{T.-P. Liu}, Forum Math. 5, No. 3, 261--280 (1993; Zbl 0804.35086) Full Text: DOI EuDML