Li, C., and T. Zhu. “Separation and Determination of Matrine, Oxymatrine and Sophoridine in Composite Preparations by Non-Aqueous Capillary Electrophoresis”. Proceedings of the Bulgarian Academy of Sciences, vol. 75, no. 7, July 2022, pp. 974-81, doi:10.7546/CRABS.2022.07.05.