@article{oliveira_oliveira_2013,  title={HPLC/DAD determination of rosmarinic acid in Salvia officinalis: sample preparation optimization by factorial design},  volume={24},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50532013000100012},  DOI={10.1590/S0103-50532013000100012},  number={1},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Oliveira, Karina B. de and Oliveira, Brás H. de},  year={2013},  month={Jan},  pages={85–91} }