@article{antunes_nunes_2018,  title={Characterization of Impact Toughness Properties of DIN39MnCrB6-2 Steel Grade},  volume={21},  ISSN={1516-1439},  url={https://doi.org/10.1590/1980-5373-MR-2017-0332},  DOI={10.1590/1980-5373-MR-2017-0332},  number={1},  journal={Materials Research},  publisher={ABM, ABC, ABPol},  author={Antunes, João Paulo Gomes and Nunes, Carlos Angelo},  year={2018},  pages={e20170332} }