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♦ ¹Feeding ecology and trophic level of the banded guitarfish, Zapteryx exasperata, inferred from stable isotopes and stomach contents analysis, María-del-Pilar Blanco-Parra, Felipe Galván-Magaña, J. Fernando Márquez-Farías, Carlos Alberto Niño-Torres, Environmental Biology of Fishes, September 2012, Volume 95, Issue 1, pp 65-77
♦ ²Trophic structure and flows of energy in the Huizache–Caimanero lagoon complex on the Pacific coast of Mexico; Manuel J. Zetina-Rejón, Francisco Arreguı́n-Sánchez, Ernesto A. Chávez; Estuarine, Coastal and Shelf Science 57 (2003) 803–815