@article{menezes_paz_angélica_neves_pergher_2014,  title={Color and shade parameters of ultramarine zeolitic pigments synthesized from kaolin waste},  volume={17},  ISSN={1516-1439},  url={https://doi.org/10.1590/S1516-14392014005000078},  DOI={10.1590/S1516-14392014005000078},  journal={Materials Research},  publisher={ABM, ABC, ABPol},  author={Menezes, Raquel Aranha de and Paz, Simone Patrícia Aranha da and Angélica, Rômulo Simões and Neves, Roberto de Freitas and Pergher, Sibele Berenice Castella},  year={2014},  month={Aug},  pages={23–27} }