Alves, F. M., Chícharo, L. M., Serrao, E. and Abreu, A. D. (2003) “Grazing by Diadema antillarum (Philippi) upon algal communities on rocky substrates”, Scientia Marina, 67(3), pp. 307–311. doi: 10.3989/scimar.2003.67n3307.