Liu Zuo-Cai; Cui Xiu-Shan; Fan Guang-Yu; Deng Bai-Ming; Wang Huan-Zhong; Li Yun-Zheng. Crystal Structures of 1-Methyl-3-Indolmethy-Lidene (Isopropylidene) Succinic Anhydride (I) and 1-Methyl-3-Indolethylidene (Isopropylidene) Succinic Anhydride(II)[J].Acta Phys. -Chim. Sin., 1990, 6(02): 224-228.