Studies on coumarins of a Chinese drug “Qian-Hu”; VII. Structures of new coumarin-glycosides of Zi-Hua Qian-Hu and effect of coumarin-glycosides on human platelet aggregation. - Matano,Y.; Okuyama,T.; Shibata,S.; Hoson,M.; Kawada,T.; Osada,H.; Noguchi,T. (Planta Med, 1986)