1. Hellgren, L., and Vincent, J., J. int. med. Res.5 (1977) 334.
2. Hellgren, L., Eur. J. clin. Pharmac.24 (1983) 623.
3. Everson, I., Southern Ocean Fisheries, Survey Programme FAO Rep. GLO/SO/77/1. FAO, Rome 1977.
4. Ellingsen, T., and Mohr, V., Process Biochem.14 (1979) 14.
5. Ellingsen, T., Thesis, Norwegian Institute of Technology, Trondheim 1982.