Zhang, L., Lu, N.T., Zhou, X.-M. and Zhang, L.-B. 2017.

Three new species of the fern genus Pteridrys (Tectariaceae) from Vietnam

. Phytotaxa. 324, 3 (Oct. 2017), 279–287. DOI:https://doi.org/10.11646/phytotaxa.324.3.4.