Lu, N.T., Zhang, L. and Zhang, L.-B. 2014.

Polystichum hagiangense (subg. Haplopolystichum; Dryopteridaceae), a new fern species from Ha Giang Province, northern Vietnam

. Phytotaxa. 175, 5 (Aug. 2014), 293–297. DOI:https://doi.org/10.11646/phytotaxa.175.5.9.