BANAZ OMER AHMAD1; KAMAL M. MAHMOUD2. Determination of Caffeine and Few Metals in Halabja Tea and Comparing with Various Tea Samples in Erbil Markets. Journal of Kufa for Chemical Sciences, Kufa, Najaf, IRAQ, v. 2, n. 9, p. 128–142, 2023. DOI: 10.36329/jkcm/2022/v2.i9.13291. Disponível em: https://journal.uokufa.edu.iq/index.php/jkcs/article/view/13291. Acesso em: 13 jul. 2026.