1. Photochemische und Photokatalytische Reaktionen von Koordinationsverbindungen;Hennig,1988
2. Advantages and disadvantages of photocatalysis induced by light-sensitive coordination compounds
3. Photosensitization und Photocatalysis Using Inorganic und Organometallic Compounds;Hennig,1993
4. Photosensitive Metal-Organic Systems. Mechanistic Principles and Applications,1993
5. R. Billing, Coord. Chem. Rev., in press.