1. Identification of British Fishes;Bagenal,1973
2. Congridae;Bauchot,1986
3. Bauchot, M.L., 1987. Poissons osseaux, Congridae. In: Fisher, W., Bauchot, M.L., Schneider, M. (Eds) Fiches FAO d’identification des espèces pour les besoins de la pêche, Méditerranée et Mer Noire, Zone de Pêche 37, vol. II, FAO, Rome, pp 1065–1069.
4. Natural History of British Fishes;Buckland,1891
5. Accuracy, precision and quality control in age determination, including a review of the use and abuse of age validation methods;Campana;J. Fish Biol.,2001