@article{ribeiro_melo_lopes_moita_2016,  title={Development and validation of a method for the determination of folic acid in different pharmaceutical formulations using derivative spectrophotometry},  volume={52},  ISSN={1984-8250},  url={https://doi.org/10.1590/S1984-82502016000400019},  DOI={10.1590/S1984-82502016000400019},  number={4},  journal={Brazilian Journal of Pharmaceutical Sciences},  publisher={Universidade de São Paulo, Faculdade de Ciências Farmacêuticas},  author={Ribeiro, Marcos Vinícius de Moura and Melo, Ingrid da Silva and Lopes, Francisco das Chagas da Costa and Moita, Graziella Ciaramella},  year={2016},  month={Oct},  pages={741–750} }