@article{costa_nunes_zanutto_müller_2010,  title={Stability of Citrus tristeza virus protective isolates in field conditions},  volume={45},  ISSN={0100-204X},  url={https://doi.org/10.1590/S0100-204X2010000700009},  DOI={10.1590/S0100-204X2010000700009},  number={7},  journal={Pesquisa Agropecuária Brasileira},  publisher={Embrapa Secretaria de Pesquisa e Desenvolvimento; Pesquisa Agropecuária Brasileira},  author={Costa, Alessandra Tenório and Nunes, William Mário de Carvalho and Zanutto, Carlos Alexandre and Müller, Gerd Walter},  year={2010},  month={Jul},  pages={693–700} }