1. Herdman, W. A. & Dawson, R. A. Mem. Lancs. Sea Fish. Comm. 11, 1–98 (1902).
2. Du Buit, M. H. J. Cons. int. Explor. Mer 37, 261–265 (1977).
3. Holden, M. J. in Fish Population Dynamics (ed. Gulland, J.) 187–215 (Wiley, London, 1977).
4. Holden, M. J. J. Cons. int. Explor. Mer 38, 110–118 (1975).
5. Holden, M. J. Rapp. P.-v. Réun. Cons. perm. int. Explor. Mer 164, 360–367 (1973).