NHAN, Pham Phuoc; PHU, Nguyen Tran. Effect of Time and Water Temperature on Caffeine Extraction from Coffee. Pakistan Journal of Nutrition, Pakistan, v. 11, n. 2, p. 100–103, 2012. DOI: 10.3923/pjn.2012.100.103. Disponível em: https://pjnonline.org/pjn/article/view/1581. Acesso em: 15 aug. 2025.