@article{porto_1997,  title={Walter Charleton (1620 - 1707) e sua Teoria Atômica},  volume={20},  ISSN={0100-4042},  url={https://doi.org/10.1590/S0100-40421997000300016},  DOI={10.1590/S0100-40421997000300016},  number={3},  journal={Química Nova},  publisher={Sociedade Brasileira de Química},  author={Porto, Paulo Alves},  year={1997},  month={May},  pages={335–338} }