J. L. Palazón, M. Nirchio, and C. Sarasquete, “Conventional karyotype and nucleolar organizer regions of the toadfish Halobatrachus didactylus (Schneider, 1801) (Pisces: Batrachoididae)”, Sci. mar., vol. 67, no. 4, pp. 445–449, Dec. 2003.