Fransen, Heidi P., Sylvia M.G.J. Pelgrom, Barbara Stewart-Knox, Dries de Kaste, and Hans Verhagen. 2010. “Assessment of Health Claims, Content, and Safety of Herbal Supplements Containing Ginkgo Biloba”. Food & Nutrition Research, September. https://doi.org/10.3402/fnr.v54i0.5221.