1. I. T. Drummond, P. V. Landshoff and W. J. Zakrzewski, Cambridge Preprint DAMTP 69/3.
2. Kinematics of Production Processes and the Multi-Regge-Pole Hypothesis
3. I. T. Drummond, Phys. Rev. to be published.
4. Reggeized resonance model for the production amplitude
5. W. J. Zakrzewski, Nuovo Cimento, to be published, Cambridge Preprint DAMTP 68/24. The present discussion modifies the discussion of signature given in that paper.