9[9]Kwan C Y, Daniel E E, Chen M C. Inhibition of vasomoyion by tetramethylpyrazine: does it act by blocking the voltage dependent Ca channel[J]. J Cardiovasc Pharmacol, 1990,15: 157-162.
10[10]Oddoy A, Bee D, Emercy C, et al. Effects of ligustrazine on the pressure/flow relationship in isolated perfused rat lungs [J]. EurRespir J, 1991, 4: 1223-1227.