C.  Ikebe, Gu, H., Ruan, R., and Kohno, S. -ichi, ?Chromosomes of Hynobius chinensis Günther and Hynobius amjiensis Gu from China, and Comparison with Those of 19 Other Hynobius Species?, Zoological Science, vol. 15, pp. 981 - 987, 1998.