Zhou, Feng, Yudan Fang, and Xiangdong Zhu. 2011. “Therapeutic Effect of Tetramethylphrazine on Cognitive Impairment After Subarachnoid Hemorrhage: An Experimental Study”. Asian Journal of Chemistry 23 (6):2427-29. https://asianpubs.org/index.php/ajchem/article/view/10406.