Arnold, V. I. Contact geometry and wave propagation. (English) Zbl 0715.53002 Enseign. Math., II. Sér. 36, No. 3-4, 215-266 (1990). MSC: 53-02 53C15 58H05 78A05 35L99 70G45 PDFBibTeX XMLCite \textit{V. I. Arnold}, Enseign. Math. (2) 36, No. 3--4, 215--266 (1990; Zbl 0715.53002)
Arnold, V. I. Contact geometry and wave propagation. Lectures given at the University of Oxford in November and December 1988 under the sponsorship of the International Mathematical Union. (English) Zbl 0694.53001 Monographie de L’Enseignement Mathématique, 34: Série des Conférences de l’Union Mathématique Internationale, 9. Genève: Univ. de Genève, L’Enseignement Mathématique. 56 p. sFr. 27.00 (1989). Reviewer: E.A.Lacomba MSC: 53-02 53C15 78A05 35L99 70G45 58H05 PDFBibTeX XMLCite \textit{V. I. Arnold}, Contact geometry and wave propagation. Lectures given at the University of Oxford in November and December 1988 under the sponsorship of the International Mathematical Union. Genève: Univ. de Genève, L'Enseignement Mathématique (1989; Zbl 0694.53001)