Abstract

A modular-invariant iota-epsilon-prescription is given for superstring multi-loop amplitudes, based on the light-cone gauge approach developed by us elsewhere [J.G. Taylor, P.C. Bressloff and A. Restuccia, Finite superstrings (World Scientific, Singapore, 1992); A. Restuccia and J.G. Taylor, Phys. Rep. 174 (1988) 283].