1. Steinbach, F., Nature, 215, 152 (1967).
2. Steinbach, F., Angew. Chem., 79, 1019 (1967).
3. Steinbach, F., Angew. Chem. Int. Ed., 6, 999 (1967).
4. Steinbach, F., Z. Phys. Chem. N.F., 61, 235 (1968).
5. Photocatalytic Effect of Semiconductors, in Electronic Phenomena in Chemisorption and Catalysis (edit. by K. Hauffe) (Walter de Gruyter, Berlin) (in the press).