@article{amaral jr_1976,  title={Erythroxylum campinense (Erythroxylaceae), espécie nova da Amazônia},  volume={6},  ISSN={0044-5967},  url={https://doi.org/10.1590/1809-43921976062213},  DOI={10.1590/1809-43921976062213},  number={2},  journal={Acta Amazonica},  publisher={Instituto Nacional de Pesquisas da Amazônia},  author={Amaral Jr, A.},  year={1976},  month={Jun},  pages={213–214} }