Development and validation of a method for the determination of folic acid in different pharmaceutical formulations using derivative spectrophotometry . Brazilian Journal of Pharmaceutical Sciences, [S. l.], v. 52, n. 4, p. 741–750, 2016. DOI: 10.1590/s1984-82502016000400019. Disponível em: https://revistas.usp.br/bjps/article/view/128428.. Acesso em: 3 may. 2024.