The acute nootropic effects of Ginkgo biloba in healthy older human subjects: a preliminary investigation.Published in:Human Psychopharmacology: Clinical & Experimental, 2002, v. 17, n. 1, p. 45, doi. 10.1002/hup.353By:Nathan, Pradeep J.;Ricketts, Emily;Wesnes, Keith;Mrazeck, Ludek;Greville, Warick;Stough, ConPublication type:Article