1. Lecture notes Hawaii summer school;Gell-Mann,1969
2. Brandeis summer institute notes;Zumino,1970
3. Paper presented at the Coral Gables Conf. CERN preprint TH. 1289;Ellis,1971
4. Talk presented at the Coral Gables Conf.;Fritzsch,1971-1971
5. Non-Lagrangian Models of Current Algebra