1. A dyeing technique for otolith age reading;Albrechtsen;J. Conseil Int. l'Explor. Mer,1968
2. Allen, K.R., 1951. The Horokiwi Stream. A study of a trout population. Fish. Bull. 10. New Zealand Marine Department, Wellington, 231 pp
3. Otolith length/fish length relationship of leptocephali, elvers, and sub-adult (reared) eels Anguilla anguilla;Appelbaum;Environ. Biol. Fish.,1978
4. Use of the burning technique for age determination in eels (Anguilla anguilla (L.)) derived from the stocking of elvers;Aprahamian;Fish. Res.,1987
5. Beamish, R.J., McFarlane, G.A. 1995. A discussion of the importance of aging errors, and an application to walleye pollack: the world's largest fishery. In: Secor, D.H., Dean, J.M., Campana, S.E. (Eds.), Recent Developments in Fish Otolith Research. University of South Carolina Press, Columbia, pp. 545–565