edited by I. Gohberg and M. Kac. edited by W. F. Berg and K. Hauffe. edited by R. Heim and G. Palm. edited by H. Eggerer and R. Huber. edited by A. Lodding and T. Lagerwall. edited by L. S. Nergaard and M. Glicksman. edited by F. Koenigsberger and S. A. Tobias. edited by F. Koenigsberger, and S.A. Tobias. edited by H. Halberstam, and C. Hooley. edited by G. G. Roberts and M. J. Morant.