@article{santos_mattiello_barreto_cantarutti_2019,  title={Acid Ammonium Citrate as P Extractor for Fertilizers of Varying Solubility},  volume={43},  ISSN={0100-0683},  url={https://doi.org/10.1590/18069657rbcs20180072},  DOI={10.1590/18069657rbcs20180072},  journal={Revista Brasileira de Ciência do Solo},  publisher={Sociedade Brasileira de Ciência do Solo},  author={Santos, Wedisson Oliveira and Mattiello, Edson Marcio and Barreto, Matheus Sampaio Carneiro and Cantarutti, Reinaldo Bertola},  year={2019},  pages={e0180072} }