Andreeva, E. Y., Tang, J., Dmitrienko, S. G. and Zolotov, Y. A. (2019) “Determination of caffeine, theobromine and theophylline in tea by reversed-phase high-performamce liquid chromatography method”, Sorbtsionnye i Khromatograficheskie Protsessy, 10(6). Available at: https://journals.vsu.ru/sorpchrom/article/view/2114 (Accessed: 18May2024).