@article{casela_ferreira_2002,  title={Variability in isolates of Puccinia polysora in Brazil},  volume={27},  ISSN={0100-4158},  url={https://doi.org/10.1590/S0100-41582002000400015},  DOI={10.1590/S0100-41582002000400015},  number={4},  journal={Fitopatologia Brasileira},  publisher={Sociedade Brasileira de Fitopatologia},  author={CASELA, CARLOS R. and FERREIRA, ALEXANDRE S.},  year={2002},  month={Jul},  pages={414–416} }