papers Conference on "Study of Periodic Solutions of Hamiltonian System", University of Rome, Feb. 1981 creator Aubin, J. P. ; ed. Bensoussan, A. ; jt. ed. Ekeland, I. ; jt. ed. text Boston Birkhauser 1983 monographic viii, 195p. Bibl. Fig. Ed. by J. P. Aubin, A. Bensoussan and I. Ekeland 515.64 C748.AH