1. World catch;Hjul;Fishing News International,1992
2. World Fisheries Situation;FAO;International Conference on Responsible Fishing, Cancun, Mexico,1992
3. Fisheries dynamics and the concept of maximum equilibrium catch;Shaefer;Proceedings of Gulf and Caribbean Fisheries Institute,1953
4. An economic approach to the optimum utilization of fisheries resources;Gordon;Journal of Fisheries Research Board of Canada,1953