@article {6,
	title = {Anthraquinones from Knoxia valerianoides},
	journal = {Phytochemistry},
	volume = {36},
	year = {1994},
	pages = {765{\textendash}768},
	author = {Zhou, Zhu and Jiang, Shan-Hao and Zhu, Da-Yuan and Lin, Long-Ze and Cordell, Geoffrey A}
}
