@article{chaulia_das_2008,  title={Process parameter optimization for fly ash brick by Taguchi method},  volume={11},  ISSN={1516-1439},  url={https://doi.org/10.1590/S1516-14392008000200008},  DOI={10.1590/S1516-14392008000200008},  number={2},  journal={Materials Research},  publisher={ABM, ABC, ABPol},  author={Chaulia, Prabir Kumar and Das, Reeta},  year={2008},  month={Apr},  pages={159–164} }