@article{rocha_costa_2006, title={Fracture toughness of Si3N4 processed by gas pressure sintering and hot pressing}, volume={9}, ISSN={1516-1439}, url={https://doi.org/10.1590/S1516-14392006000200006}, DOI={10.1590/S1516-14392006000200006}, number={2}, journal={Materials Research}, publisher={ABM, ABC, ABPol}, author={Rocha, Cláudio V. and Costa, Célio A.}, year={2006}, month={Apr}, pages={143–146} }