Yuan, Y., Y. Tan, P. Xu, H. Li, Y.-H. Li, J. Zhang, J.-Q. Zhang, F. Chen, and G.-J. Huang. “IZALPININ FROM FRUITS OF ALPINIA OXYPHYLLA WITH ANTAGONISTIC ACTIVITY AGAINST THE RAT BLADDER CONTRACTILITY”. African Journal of Traditional, Complementary and Alternative Medicines, vol. 11, no. 4, May 2014, pp. 120-5, https://journals.athmsi.org/index.php/ajtcam/article/view/2405.