@article{pires_garcia_2004,  title={Study of the nature of non-metallic inclusions in samples of aluminum and silicon killed low carbon steels, collected in the refining treatment and continuous casting stages},  volume={7},  ISSN={1516-1439},  url={https://doi.org/10.1590/S1516-14392004000400002},  DOI={10.1590/S1516-14392004000400002},  number={4},  journal={Materials Research},  publisher={ABM, ABC, ABPol},  author={Pires, José Carlos Santos and Garcia, Amauri},  year={2004},  month={Oct},  pages={517–521} }