CJCU
Studies on Flavonoids (Ⅱ)--Synthesis of 2,8-Substituted-Aryl-Benzo-(1,2-b:5,4-b' )Dipyran-4,6-Dione
Lu Yixian, Mao Shuren, Li Gengxin, Cai Mengshen
Chem. J. Chinese Universities . 1987, (4): 331 -335 .