@article{vieira_guedes filho_chiba_cantarella_2009,  title={Spatial variability of soil chemical properties after coffee tree removal},  volume={33},  ISSN={0100-0683},  url={https://doi.org/10.1590/S0100-06832009000500041},  DOI={10.1590/S0100-06832009000500041},  number={5},  journal={Revista Brasileira de Ciência do Solo},  publisher={Sociedade Brasileira de Ciência do Solo},  author={Vieira, Sidney Rosa and Guedes Filho, Osvaldo and Chiba, Márcio Koiti and Cantarella, Heitor},  year={2009},  month={Sep},  pages={1507–1514} }