@article{sixto_pérez-parada_niell_heinzen_2019,  title={GC–MS and LC–MS/MS workflows for the identification and quantitation of pyrrolizidine alkaloids in plant extracts, a case study: <i>Echium plantagineum</i>},  volume={29},  ISSN={0102-695X},  url={https://doi.org/10.1016/j.bjp.2019.04.010},  DOI={10.1016/j.bjp.2019.04.010},  number={4},  journal={Revista Brasileira de Farmacognosia},  publisher={Sociedade Brasileira de Farmacognosia},  author={Sixto, Alexandra and Pérez-Parada, Andrés and Niell, Silvina and Heinzen, Horacio},  year={2019},  month={Jul},  pages={500–503} }