@article{uchôa_hernández_melo_silva_silva_carvalho_2021,  title={Available sulphur by different extractants in soils of the state of Ceará, Brazil<sup/>},  volume={52},  ISSN={1806-6690},  url={https://doi.org/10.5935/1806-6690.20210071},  DOI={10.5935/1806-6690.20210071},  number={4},  journal={Revista Ciência Agronômica},  publisher={Universidade Federal do Ceará},  author={Uchôa, Sandra Catia Pereira and Hernández, Fernando Felipe Ferreyra and Melo, Valdinar Ferreira and Silva, Deyse Cristina Oliveira da and Silva, Armando José da and Carvalho, Laís de Brito},  year={2021},  pages={e20207508} }