David, P., O. S. G. Pauwels, T. Q. Nguyen, and G. Vogel. “On the Taxonomic Status of the Thai Endemic Freshwater Snake Parahelicops boonsongi, With the Erection of a New Genus (Squamata: Natricidae)”. Zootaxa, vol. 3948, no. 2, Apr. 2015, pp. 203–217, doi:10.11646/zootaxa.3948.2.3.