NATURAL PRODUCT RESEARCH AND DEVELOPMENT, Volume 18, Issue 4,2006, Pages 628-630, doi:10.3969/j.issn.1001-6880.2006.04.024
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NATURAL PRODUCT RESEARCH AND DEVELOPMENT, Volume 18, Issue 4,2006, Pages 549-554, doi:10.3969/j.issn.1001-6880.2006.04.005
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