@article{miyata_tagawa_2002,  title={Mezzo-scopic Analysis of Fracture Toughness in Steels},  volume={5},  ISSN={1516-1439},  url={https://doi.org/10.1590/S1516-14392002000200001},  DOI={10.1590/S1516-14392002000200001},  number={2},  journal={Materials Research},  publisher={ABM, ABC, ABPol},  author={Miyata, Takashi and Tagawa, Tetsuya},  year={2002},  month={Jun},  pages={85–93} }