edited by J. V. Sanders and D. J. Goodchild. edited by M. J. Howes, D. V. Morgan. edited by J. H. Burnett & A. P. J. Trinci. edited by J. Mort and D. M. Pai. edited by J. Rhodes and J. Spence. edited by J.M. Walker, E.B. Gingold. edited by J. T. Devreese and V. E. van Doren. edited by Jacques C. J. Nihoul. edited by D. A. Brannan, J. G. Clunie. edited by T. J. H. Clark and S. Godfrey.