1. "R: A language and environment for statistical computing." (2022)
2. H. Zaher, "Bulletin of the American Museum of Natural History." 240, "Hemipenial morphology of the South American xenodontine snakes, with a proposal for a monophyletic Xenodontinae and a reappraisal of colubroid hemipenes." 1 (1999)
3. S. E. Evans, "Biological Reviews." 78, "At the feet of the dinosaurs: the early history and radiation of lizards." 513 (2003)
4. W. Auffenberg, "Tulane Studies in Zoology." 10, "The fossil snakes of Florida." 131 (1963)
5. M. S. Y. Lee and J. D. Scanlon "Biological Reviews." 77, "Snake phylogeny based on osteology, soft anatomy and ecology." 333 (2002)