1. Jaycock, M. J., and Ottewill, R. H., IVth Intern. Cong. surface Active Substances (Brussels, September, 1964), Section B, Paper 8.
2. Nagakawa, T., and Inoue, H., IVth Intern. Congr. surface Active Substances (Brussels, September, 1964), Paper 11.
3. Strehlow, H., and Becker, M., Z. Elektrochemie, 63, 457 (1959).