AZIZ RAMADAN, ABDUL; LAHMEK., M`HAMMED. Separation and Determination of Phenobarbital and Guaifenesine in Commercial Pharmaceuticals Using Grafted Algerian Bentonite With SE-52 By Gas Chromatography. Asian Journal of Chemistry, [S. l.], v. 21, n. 4, p. 3263–3269, 2010. Disponível em: https://asianpubs.org/index.php/ajchem/article/view/12449. Acesso em: 6 jul. 2024.