1. Heintz, A., in The Biology of Myxine (edit. by Brodal, A., and Fänge, R.), 9–21 (Universitetsforlaget, Oslo, 1963).
2. Jensen, D., Comp. Biochem. Physiol., 2, 181–201 (1961).
3. Berkner, L. V., and Marshall, L. C. J. atmosph. Sci., 22, 225–261 (1965).
4. Manwell, C., in The Biology of Myxine (edit. by Brodal, A., and Fänge, R.), 372–455 (Universitetsforlaget, Oslo, 1963).
5. Manwell, E., Biol. Bull., 115, 227–238 (1958).