Spectrophotometric Determination of Terbutaline Sulphateand Tetracycline Hydrochloride via Ion pair Complex Formation Using Eosin Y. Pakistan Journal of Analytical & Environmental Chemistry, Pakistan, v. 15, n. 1, p. 84–92, 2014. DOI: 10.21743/. Disponível em: https://pjaec.pk/index.php/pjaec/article/view/347. Acesso em: 12 jul. 2025.