Pokhrel, Prashanta, Suraj Shrestha, Som Kanta Rijal, and Krishna Prasad Rai. “A Simple HPLC Method for the Determination of Caffeine Content in Tea and Coffee”. Journal of Food Science and Technology Nepal 9 (December 19, 2016): 74–78. Accessed November 24, 2024. https://nepjol.info./index.php/JFSTN/article/view/16200.