Nyoro FD, Sim SF, Jeffrey Kimura AL. Estimation of Caffeine Content in Coffee of Malaysian Market Using Fourier Transform Infrared (FTIR) Spectroscopy. TUR [Internet]. 2018 Dec. 10 [cited 2024 Nov. 25];1(1):a16-22. Available from: https://publisher.unimas.my/ojs/index.php/TUR/article/view/1137