NAGAWARAM, P. R.; KANCHANPALLY, V. Comparative study of theophylline and doxofylline in the treatment of stable chronic obstructive pulmonary disease. International Journal of Basic & Clinical Pharmacology, [S. l.], v. 5, n. 2, p. 251–256, 2016. DOI: 10.18203/2319-2003.ijbcp20160464. Disponível em: https://www.ijbcp.com/index.php/ijbcp/article/view/239. Acesso em: 8 oct. 2025.