De-excitation mechanisms of the 'ANTPOT. 3 T IND. 2' excited state in 'BALIF IND.3'':NI POT.2+' crystals - Martins, E; Duarte, Marcos; Baldochi, S L; Morato, S P; Vieira, M M F; Vieira Junior, N D (Journal of Physical Chemical Solids, 1997)