AFIFY, A. E.-M. M.; SHALABY, E. A.; EL-BELTAGI, H. S. Antioxidant Activity of Aqueous Extracts of Different Caffeine Products. Notulae Botanicae Horti Agrobotanici Cluj-Napoca, [S. l.], v. 39, n. 2, p. 117–123, 2011. DOI: 10.15835/nbha3926254. Disponível em: https://notulaebotanicae.ro/index.php/nbha/article/view/6254. Acesso em: 10 feb. 2025.