Dynamical systems lectures given at the 2nd session of the Centro internazionale matematico estivo (C.I.M.E.) held in Montecatini Terme, Italy, June 13-22, 1994 / L. Arnold ... [et al.] ; editor, R. Johnson. - Arnold, L. (Ludwig), 1937-; Johnson, R. (Russell) (Lecture notes in mathematics (Springer-Verlag) ;, 1995)