1. Rapporteur Talk;Gatto,1965
2. Proc. Intern. Symp. on Electron and Photon Interactions at High Energies;Marin,1967
3. Proc. Heidelberg Intern. Conf. on Elementary Particles;Panofsky,1967
4. Proc. 14th Intern. Conf. on High Energy Physics;Ting,1968
5. Proc. 4th Intern. Symp. on Electron and Photons Interactions at High Energies;Gatto,1969