@article{barbosa_casela_pfenning_santos_2005,  title={Identification of sources of resistance in sorghum to Peronosclerospora sorghi},  volume={30},  ISSN={0100-4158},  url={https://doi.org/10.1590/S0100-41582005000500010},  DOI={10.1590/S0100-41582005000500010},  number={5},  journal={Fitopatologia Brasileira},  publisher={Sociedade Brasileira de Fitopatologia},  author={Barbosa, Flavia C. R and Casela, Carlos R and Pfenning, Ludwig H and Santos, Fredolino G},  year={2005},  month={Sep},  pages={522–524} }