M. del P. Becerra Cardona, H. A. Mallea Cardenas, and P. A. Van Damme, “The use of premaxillary bones of six fish species in giant otter (Pteronura brasiliensis) diet analysis”, Lat. Am. J. Aquat. Mamm., vol. 10, no. 2, pp. 131-142, Dec. 2015.