@article{viana_evangelista_stern_2007,  title={Chemical zoning of muscovite megacrystal from the Brazilian Pegmatite Province},  volume={79},  ISSN={0001-3765},  url={https://doi.org/10.1590/S0001-37652007000300007},  DOI={10.1590/S0001-37652007000300007},  number={3},  journal={Anais da Academia Brasileira de Ciências},  publisher={Academia Brasileira de Ciências},  author={Viana, Rúbia R. and Evangelista, Hanna J. and Stern, Willem B.},  year={2007},  month={Sep},  pages={431–439} }