edited by Luciano Pietronero and Erio Tosatti. edited by Norman March and Mario Tosi. edited by R.J. Hamilton and A. Bhati. edited by Klaus-Dieter Bierstedt and Benno Fuchssteiner. edited by Ezio Biglieri and Giancarlo Prati. edited by Soldano Ferrone, Manfred P. Dierich.