edited by A. E. Dixon and J. D. Leslie. edited by D. A. Brannan, J. G. Clunie. edited by A. D. Jenkins and A. Ledwith. edited by E. L. Grove, A. J. Perkins. edited by E. G. Derouane and A. A. Lucas. edited by A. B. Hart and A. J. B. Cutler. / edited by A. G. Cullis and D. C. Joy. edited by A. P. French and P. J. Kennedy. edited by Frank J. Dixon & Henry G. Kunkel. edited by A.M. Dziewonski and by E. Boschi.