1. See the papers in Berichte der Bunsen-Gesellshaft für physic-kalische Chemie 76 (8) (1972): cintributedpapers are given in reports Jü1-Conf-6 (1972).
2. C.K. Hall, this meeting.
3. D.G. Westlake, this meeting.
4. H. Peisl, this meeting.
5. K.W. Kehr, this meeting.