A. U. Beltrán-Torres and J. P. Carricatt-Ganivet, “Skeletal morphologic variation in Montastrea cavernosa (Cnidaria: Scleractinia) at Isla Verde Coral Reef, Veracruz, Mexico”, Rev. Biol. Trop., vol. 41, no. 3A, pp. 559–562, Dec. 1993.