Natural Product Research and Development, Volume 23, Issue 5,2011, Pages 931-934, doi:10.3969/j.issn.1001-6880.2011.05.032
Natural Product Research and Development, Volume 23, Issue 5,2011, Pages 939-945, doi:10.3969/j.issn.1001-6880.2011.05.034
Natural Product Research and Development, Volume 23, Issue 5,2011, Pages 889-893, doi:10.3969/j.issn.1001-6880.2011.05.022
Natural Product Research and Development, Volume 23, Issue 5,2011, Pages 909-912, doi:10.3969/j.issn.1001-6880.2011.05.027
Natural Product Research and Development, Volume 23, Issue 5,2011, Pages 894-897, doi:10.3969/j.issn.1001-6880.2011.05.023