1. We shall employ the metric q2 = q02 – q2 and the convention of γ-matrices, etc., used by Bjorken and Drell (Relativistic Quantum Mechanics, McGraw Hill).
2. Asymptotic Sum Rules at Infinite Momentum
3. Rapporteur talk at the 1971 International Symposium on Electron and Photon Interactions at High Energies, Cornell (1971).