Conservation biology of Paphiopedilum purpuratum (Orchidaceae)
LIU Zhong-Jian, ZHANG Jian-Yong, RU Zheng-Zhong, LEI Si-Peng, CHEN Li-Jun
Biodiv Sci . 2004, (5): 509 -516 .  DOI: 10.17520/biods.2004063