Validated stability indicating HPLC method for estimation of theophylline from a novel microsphere formulation. Asian Journal of Pharmaceutics (AJP), [S. l.], v. 3, n. 1, 2014. DOI: 10.22377/ajp.v3i1.235. Disponível em: https://www.asiapharmaceutics.info/index.php/ajp/article/view/235. Acesso em: 15 apr. 2026.