@article{sampaio_barbosa_fernandes_1989,  title={Ensaio de espaçamento com Caroba - <i>Jacaranda copaia</i> (Aubl.) D. Don. Bignontaceae},  volume={19},  ISSN={0044-5967},  url={https://doi.org/10.1590/1809-43921989191389},  DOI={10.1590/1809-43921989191389},  journal={Acta Amazonica},  publisher={Instituto Nacional de Pesquisas da Amazônia},  author={Sampaio, Paulo de Tarso Barbosa and Barbosa, Antenor Ρereira and Fernandes, Noeli Paulo},  year={1989},  pages={383–389} }