Yongsheng, L., L. Shumei, and W. guodong. “STUDIES ON RESIN PURIFICATION PROCESS OPTIMIZATION OF EUCOMMIA ULMOIDES OLIVER AND ITS ANTIHYPERTENSIVE EFFECT MECHANISM”. African Journal of Traditional, Complementary and Alternative Medicines, vol. 11, no. 2, Jan. 2014, pp. 475-480., https://journals.athmsi.org/index.php/ajtcam/article/view/2351.