Feng X, Dickinson HG. 2007. Packaging the male germline in plants. Trends in Genetics. 23(10), 503–510.

Liao Z, Chen M, Gong Y, Guo L, Tan Q, Feng X, Sun X, Tan F, Tang K. 2004. A new geranylgeranyl Diphosphate synthase gene from Ginkgo biloba, which intermediates the biosynthesis of the key precursor for ginkgolides. DNA Sequence. 15(2), 153–158.