edited by G. Ferrate and E.A. Puente. edited by A. Crespo and J.A. De La Puente. edited by G. N. Pande & O. C. Zienkiewicz. edited by G. Sykes and F. A. Skinner. edited by G.A. Ringland and D.A. Duce. edited by Leo A. Paquette. edited by G. Alexits and P. Turan. edited by G. F. Froment. edited by G. Letta and M. Pratelli. edited by G. Turian and H.R. Hohl.