Matsui, M., N. Yoshikawa, A. Tominaga, T. Sato, S. Takenaka, S. Tanabe, K. Nishikawa, and S. Nakabayashi . 2008. Phylogenetic relationships of two Salamandrella species as revealed by mitochondrial DNA and allozyme variation (Amphibia: Caudata: Hynobiidae). Molecular Phylogenetics and Evolution 48: 84-93.