@article{article6d66aeff,
title   = {Regional geology of the Poços de Caldas alkaline complex: mineralogy and geochemistry of selected nepheline syenites and phonolites},
author = {Schorscher, Johann Hans Daniel and Shea, M. E.},
year = {1992},
doi = {10.1016/0375-6742(92)90121-n},
journal   = {Journal of Geochemical Exploration}
}