Tuan, N. A., T. H. Thai, J.-C. Wang, and C.-T. Lu. “A New Record of Species Asarum Cordifolium C. E. C. Fischer (Aristolochiaceae) for the Flora of Vietnam”. Academia Journal of Biology, vol. 34, no. 2, June 2012, pp. 197-00, doi:10.15625/0866-7160/v34n2.959.