edited by F. T. Arecchi and V. Degiorgio. edited by F.T. Arecchi and F.R. Auusenegg. edited by N. B. Urli and J. W. Corbett. edited by R.W. Frei and K. Zech. edited by E.S. Vizi and K. Magyar. edited by G. Angeletti and G. Restelli. edited by P.M. Mannucci and A. D'Angelo. edited by R.P. Reed and T. Horiuchi. edited by Z. Nitecki and C. Robinson. edited by R.W. Frei and J.F. Lawrence.