1. Herak, M. J. andM. Mirnik, Kolloid-Z.168, 139 (1960), Ibid.179, 130 (1961).
2. Herak, M. J. andM. Mirnik, Croat. Chem. Acta34, 153 (1962).
3. Mirnik, M., Nature190, 689 (1961), Ibid.,199, 555 (1963).
4. Mirnik, M., Croat. Chem. Acta35, 217 (1963).
5. Tesla, D., M. J. Herak, V. Pravdić andM. Mirnik, Croat. chem. Acta37, 79 (1965).