Holder, Mark T., Mark V. Erdmann, Thomas P. Wilcox, Roy L. Caldwell, and David M. Hillis, Two living species of coelacanths?, in Proceedings of the National Academy of the United States of America, vol. 96, 1999, pp. 12616–12620, DOI:10.1073/pnas.96.22.12616.
Holder, Mark T., Mark V. Erdmann, Thomas P. Wilcox, Roy L. Caldwell, and David M. Hillis, Two living species of coelacanths?, in Proceedings of the National Academy of the United States of America, vol. 96, 1999, pp. 12616–12620, DOI:10.1073/pnas.96.22.12616.