C. Lenis and I. Vélez, “Digeneans in Trachemys callirrostris callirostris and Podocnemis lewyana (Testudinata) from the Magdalena River, Colombia: description of Pseudonematophila n. gen. and amendment of Nematophila Travassos, 1934 (Cladorchiidae: Schizamphistominae)”, Zootaxa, vol. 3095, no. 1, pp. 49–62, Nov. 2011.