Gelsleichter, J. & Piercy, A. & Musick, J.A. (1998)
Evaluation of copper, iron and lead substitution techniques in elasmobranch age determination.
Journal of Fish Biology, 53(3), 465–470 DOI: 10.1111/j.1095-8649.1998.tb00995.x
Barone M. & Friedman K. (2021)
Better data collection in shark fisheries – Learning from practice.
FAO Fisheries and Aquaculture Circular, 1227, 1-80