1. A.M. Boyarski, F. Bulos, W. Busza, R. Diebold, S.D. Ecklund, G.E. Fischer, J.R. Rees and B. Richter, Stanford Linear Accelerator Center preprint (SLAC-PUB-360);
2. Forward peak in π+—photoproduction
3. J.S. Ball, W.R. Frazer and M. Jacob, UCLA preprint.
4. Is there a pion conspiracy?
5. Aachen-Berlin-CERN collaboration, CERN, preprint.