@article{nardi_plá-cid_bitencourt_stabel_2008,  title={Geochemistry and petrogenesis of post-collisional ultrapotassic syenites and granites from southernmost Brazil: the Piquiri Syenite Massif},  volume={80},  ISSN={0001-3765},  url={https://doi.org/10.1590/S0001-37652008000200014},  DOI={10.1590/S0001-37652008000200014},  number={2},  journal={Anais da Academia Brasileira de Ciências},  publisher={Academia Brasileira de Ciências},  author={Nardi, Lauro V.S. and Plá-Cid, Jorge and Bitencourt, Maria de Fátima and Stabel, Larissa Z.},  year={2008},  month={Jun},  pages={353–371} }