G. Liang, H. Kao, T. Wang, Y. Guo, J. Ping, and H. Wang, “Optimization, Validation and Application of Spectrophotometric Assay for 3-Hydroxy-3-methylglutarylcoenzyme A Reductase Activity”, Trop. J. Pharm Res, vol. 14, no. 4, pp. 671–677, May 2015.