@article{articleff65bec0,
title   = {Electron paramagnetic resonance and thermally stimulated depolarisation currents in natural Brazilian amethyst},
author = {Cortezão, S. U. and Blak, Ana Regina},
year = {2001},
doi = {10.1080/10420150108216907},
journal   = {Radiation Effects and Defects in Solids}
}