1. UV-degradation of aquatic humic substances;de Haan;Finn. Humus News,1991
2. Liquid chromatography with three dimensional detection of humic substances and oxidation products;Frimmel;Finn. Humus News,1991
3. Einwirkung von Ozon auf Huminsäuren in wässrigen Lösungen;Gilbert;Vom Wasser,1980
4. Influence of ultraviolet radiation on aquatic humus;Gjessing;Vatten,1970
5. Photochemical source of biological substrates in seawater: implications of carbon cycling;Kieber;Nature,1989