https://www.sciencedirect.com/science/article/pii/S0731708506004419 (Publisher version)
Liu, X., Li, J., Huang, W., Li, B., Chen, H., & Bi, S. (2006). Determination of arbidol in human plasma by LC-ESI-MS. Journal of Pharmaceutical and Biomedical Analysis, 43(1), 371-375. doi:10.1016/j.jpba.2006.06.039.