@article{article02344c5a,
title   = {Coexistence of Sm3+ and Sm2+ ions in amorphous SiOx: origin, main light emission lines and excitation-recombination mechanisms},
author = {Zanatta, Antonio Ricardo},
year = {2016},
doi = {10.1364/OME.6.002108},
journal   = {Optical Materials Express}
}