1. California Institute of Technology Synchrotron Laboratory Report CTSL-20;Gell-Mann,1961
2. Derivation of strong interactions from a gauge invariance
3. Proc. Athens Topical Conf. on Recently Discovered Resonant Particles;Dalitz,1963
4. Proc. Athens Topical Conf. on Recently Discovered Resonant Particles;Glashow,1963