edited by P. L. Butzer and J. Korevaar. edited by S.K. Mitter and A. Moro. edited by A. R. Butler and M. J. Perkins. edited by E. Wecker and I. Horak. edited by M. Ashburner and E. Novitski. edited by M. Schnitzer and S. U. Khan. edited by W.G. Cutler and R.C. Davis. edited by A.R. Butler and M.J. Perkinks. edited by J. G.A.De Graff and P. Tegelaar. edited by E.S. Vizi and K. Magyar.