@article{oliveira_cássaro_pires_2020,  title={The porous size distribution obtained and analyzed by free access software},  volume={42},  ISSN={1806-1117},  url={https://doi.org/10.1590/1806-9126-RBEF-20200192},  DOI={10.1590/1806-9126-RBEF-20200192},  journal={Revista Brasileira de Ensino de Física},  publisher={Sociedade Brasileira de Física - SBF},  author={Oliveira, Jocenei Antônio Teodoro de and Cássaro, Fabio Augusto Meira and Pires, Luiz Fernando},  year={2020},  pages={e20200192} }