1. Proc. 4th Int. Symposium on electron and photon interactions at high energies;Brodsky,1969
2. Proc. 1971 Int. Symposium on electron and photon interactions at high energies;Brodsky,1971
3. Recent developments in the comparison between theory and experiments in quantum electrodynamics
4. Proc. 4th Int. symposium on electron and photon interactions at high energies;Perez-y-Jorba,1969
5. Proc. 1971 Int. Symposium on electron and photon interactions at high energies;Bernardini,1971