Structural and EPR studies of Cu2+ ions in NaPO3 - Sb2O3 - CuO glasses - Franco, Douglas F.; Carvajal, Eduar E.; Donoso, José Pedro; Silva, Maurício A. P.; Sant’Ana, Antonio C.; Fares, Hssen; Magon, Claudio José; Nalin, Marcelo (Journal of Non-Crystalline Solids, 2019)