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Guo, P.; Zhu, F.; Liu, Q.; Zhang, L.; Li, J.X.; Huang, Y.Y.; Pyron, R.A. 2014 A taxonomic revision of the Asian keelback snakes, genus Amphiesma (Serpentes: Colubridae: Natricinae), with description of a new species. Zootaxa 3873(4): 425–440.