Hautes ňergies en astrophysique : Universit ̌de Grenoble, cole d'ť ̌de physique thǒrique, cours donnš aux Houches en 1966 = High energy astrophysics: lectures delivered at Les Houches during the 1966 session of the Summer School of Theoretical Physics ... / ďit ̌par C. DeWitt, E. Schatzman, P. Vřon.