1. The conclusion of the 2nd ISR Workshop, together with a detailed review of the physics at the ISR as of September 1977 are to be found in a series of documents ISR WORKSHOP/2-n, n = 1 to 18, CERN reports.
2. A. Contogouris et al., McGill preprint (1978)
3. Tokyo Conference;Field,1978
4. We are grateful to R. Horgan for discussions on that question.