Martins, Ayrton Figueiredo, and Rosane Maria Coradini. “Caffeine Determination in Soft Drinks Throuh UV-Spectrophotometry”. Ciência e Natura 4, no. 4 (December 13, 1982): 55–60. Accessed December 23, 2024. https://periodicos.ufsm.br/cienciaenatura/article/view/24932.