Gallagher, M.J. & Green, M.J. & Nolan, C.P. (2006)
The potential use of caudal thorns as a non-invasive ageing structure in the thorny skate (Amblyraja radiata Donovan, 1808).
Environmental Biology of Fishes, 77(3–4), 265–272 DOI: 10.1007/s10641-006-9114-4