@article{viégas_1941,  title={Manchas das fôlhas da mandioca, produzidas por Cercosporas},  volume={1},  ISSN={0006-8705},  url={https://doi.org/10.1590/S0006-87051941000300001},  DOI={10.1590/S0006-87051941000300001},  number={3},  journal={Bragantia},  publisher={Instituto Agronômico de Campinas},  author={Viégas, A. P.},  year={1941},  pages={233–248} }