Xuyen, D. T., and V. X. Phuong. “A New Record of Species Loxostigma Fimbrisepalum K. Y. Pan (Gesneriaceae Dumort) for the Flora of Vietnam”. Academia Journal of Biology, vol. 33, no. 4, May 2012, pp. 45-47, doi:10.15625/0866-7160/v33n4.779.