N. MURALI KRISHNA; S. SRINIVASA RAO; C. RAMBABU. Bromothymol blue and Bromocresol purple as efficient reagents for the development and validation of visible spectrophotometric assay methods for Felodipine . International Journal of Pharmaceutics and Drug Analysis, [S. l.], v. 5, n. 4, p. 108-115, 2017. Disponível em: https://ijpda.org/index.php/journal/article/view/276. Acesso em: 31 aug. 2026.