Conférences de : R. Balian, H.J. Borchers, J.J. Duistermaat J.P. Eckmann, H. Goldschmidt et C.V. Stanojević
Talk no. 2, 14 p.
Talk no. 3, 15 p.
Talk no. 4, 14 p.
Talk no. 5, 14 p.