Gower, D. J., A. Kupfer, O. V. Oommen, W. Himstedt, R. A. Nussbaum, S. P. Loader, B. Presswell, H. Müller, S. B. Krishna, R. Boistel, and M. Wilkinson. 2002. A molecular phylogeny of ichthyophiid caecilians (Amphibia: Gymnophiona: Ichthyophiidae): out of India or out of South East Asia?. Proceedings of the Royal Society of London. Series B, Biological Sciences 269: 1563–1569.