@article{pereira_amaral-labat_silva_2019,  title={Effect of sawdust as porosity agent on final properties of geopolymers},  volume={65},  ISSN={0366-6913},  url={https://doi.org/10.1590/0366-6913201965S12607},  DOI={10.1590/0366-6913201965S12607},  journal={Cerâmica},  publisher={Associação Brasileira de Cerâmica},  author={Pereira, D. C. and Amaral-Labat, G. and Silva, G. F. B. Lenz e},  year={2019},  month={Jan},  pages={104–109} }