C. W. Whitney, M. (Meej V. Vang Sin, G. Lê Hồng, C. Vu Van, K. Barber, and L. Thi Tran, “Conservation and Ethnobotanical Knowledge of a Hmong Community in Long Lan, Luang Prabang, Lao People’s Democratic Republic”, Ethnobot. Res. App., vol. 12, pp. 643–658, Dec. 2014.