@article{costamilan_2005,  title={Variability of the wheat powdery mildew pathogen Blumeria graminis f. sp. tritici in the 2003 crop season},  volume={30},  ISSN={0100-4158},  url={https://doi.org/10.1590/S0100-41582005000400015},  DOI={10.1590/S0100-41582005000400015},  number={4},  journal={Fitopatologia Brasileira},  publisher={Sociedade Brasileira de Fitopatologia},  author={Costamilan, Leila M.},  year={2005},  month={Jul},  pages={420–422} }