@article{brinkmann_nascimento_1973,  title={The effect of slash and burn agriculture on plant nutrients in the Tertiary Region of Central Amazonia <sup>(</sup><sup>)</sup>},  volume={3},  ISSN={0044-5967},  url={https://doi.org/10.1590/1809-43921973031055},  DOI={10.1590/1809-43921973031055},  number={1},  journal={Acta Amazonica},  publisher={Instituto Nacional de Pesquisas da Amazônia},  author={Brinkmann, W. L. F. and Nascimento, J. C. do},  year={1973},  month={Apr},  pages={55–61} }