1. The Drupa oil spill, investigations concerning oil, water and fish;Grahl-Nielsen;ICES C.M. 1976/E:34,1976
2. The Ekofisk Bravo blow out. Part 3. Determination of petroleum hydrocarbons in the water;Grahl-Nielsen;ICES C.M. 1977/E:55,1977
3. Guide to operational procedures for the IGOSS project on marine pollution (petroleum) monitoring;IOC/WMO,1976
4. Hydrocarbons in eastern Canadian marine waters determined by fluorescence spectroscopy and gas-liquid chromatography;Keizer;J. Fish. Res. Bd. Can.,1977
5. The determination of petroleum hydrocarbons in water, fish and sediments following the Ekofisk blow-out;Law;Mar. Pollut. Bull.,1978