1. Pauly, D. & Christensen, V. Nature 374, 255–257 (1995).
2. Vitousek, P. M., Ehrlich, P. R., Ehrlich, A. H. & Matson, P. A. Bioscience 36, 368–373 (1986).
3. Alverson, D. L., Freeberg, M. H., Murawski, S. A. & Pope, J. G. FAO Fish. Tech. Pap. 339 (1994).
4. Kirkwood, G. P., Beddington, J. R. & Rossouw, J. A. in Large Scale Ecology and Conservation Biology (eds Edwards, P. J., May, R. M. & Webb, N. R.) 199–227 (Blackwell Scientific, Oxford, 1994).
5. FAO Fish. Circ. 853 (1993).