@article{marenco_vieira_gonçalves_2003,  title={Leaf micronutrient concentrations and potential photosynthesis in
            <i>Ochroma pyramidale </i>established in a degraded land},  volume={33},  ISSN={0044-5967},  url={https://doi.org/10.1590/1809-4392200331031},  DOI={10.1590/1809-4392200331031},  number={1},  journal={Acta Amazonica},  publisher={Instituto Nacional de Pesquisas da Amazônia},  author={MARENCO, Ricardo A. and VIEIRA, Gil and GONÇALVES, José F. de C.},  year={2003},  month={Jan},  pages={23–31} }