Geometrical methods in the theory of ordinary differential equations by Arnolʹd, V. I., (Vladimir Igorevich), Levi, Mark fromGrundlehren der mathematischen Wissenschaften 0 Type: Book
Optique géométrique: cours et 134 exercices corrigés by Bécherrawy, Tamer fromLicence Maîtrise Doctorat 0 Type: Book