JOURNAL OF NON-CRYSTALLINE SOLIDS, vol. 431, page. 93 - 96, 2016-01-01
JOURNAL OF NON-CRYSTALLINE SOLIDS, vol. 356, no. 44, page. 2406 - 2408, 2010-10-01
Scientific Reports, vol. 6, page. 34008, 2016-09-23
MATERIALS RESEARCH BULLETIN, vol. 55, page. 102 - 105, 2014-07