@article{singer_1977,  title={Controle de vassoura-de-bruxa},  volume={7},  ISSN={0044-5967},  url={https://doi.org/10.1590/1809-43921977074570},  DOI={10.1590/1809-43921977074570},  number={4},  journal={Acta Amazonica},  publisher={Instituto Nacional de Pesquisas da Amazônia},  author={Singer, Rolf},  year={1977},  month={Oct},  pages={570–570} }