@inproceedings{inproceedings27de6fbd,
title   = {Depolarization currents and paramagnetic resonance of iron in amethyst},
author = {Cortezão, Salete Ugatti and Blak, Ana Regina},
year = {2001},
publisher = {SBF},
booktitle   = {Encontro Nacional de Física da Matéria Condensada}
}