@article{articlebb7ded7d,
title   = {Depolarisation currents (TSDC) and paramagnetic resonance (EPR) of iron in amethyst},
author = {Cortezão, S U and Pontuschka, Walter Maigon and Rocha, M S F da and Blak, Ana Regina},
year = {2003},
doi = {10.1016/s0022-3697(03)00043-x},
journal   = {Journal of Physics and Chemistry of Solids}
}