@article{silva_silva filho_lima_almeida_soares_koolen_souza_pinheiro_2016,  title={Chemotaxonomy of the Amazonian <i>Unonopsis</i> Species Based on Leaf Alkaloid Fingerprint Direct Infusion ESI-MS and Chemometric Analysis},  volume={27},  ISSN={0103-5053},  url={https://doi.org/10.5935/0103-5053.20150296},  DOI={10.5935/0103-5053.20150296},  number={3},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Silva, Felipe M. A. and Silva Filho, Francinaldo A. and Lima, Bruna R. and Almeida, Richardson A. and Soares, Elzalina R. and Koolen, Hector H. F. and Souza, Afonso D. L. and Pinheiro, Maria L. B.},  year={2016},  month={Mar},  pages={599–604} }