CJCU
Syntheses and 1H NMR Studies of Substituted Styryl-10H-Pyrido [1,2-a]Indolium Perchlorates
LIU Zhi-jie, LI Wen-ge, ZHANG Jian-heng, GONG Yong
Chem. J. Chinese Universities . 1992, (4): 470 -473 .