Bich Nga, Nguyen Thi, et al. “Analysis of Genetic Distance and Phylogenetic Relationships of “natural admixed” and ‘introgressive’ Hybridization of Fasciola Spp. In Vietnam”. Vietnam Journal of Biotechnology, vol. 16, no. 3, Dec. 2018, pp. 423-30, doi:10.15625/1811-4989/16/3/13467.