Media type: E-Article Title: Spectroscopic properties of transparent Er-doped oxyfluoride glass–ceramics with GdF3 Contributor: Środa, Marcin; Szlósarczyk, Krzysztof; Różański, Marek; Sitarz, Maciej; Jeleń, Piotr imprint: Elsevier BV, 2015 Published in: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy Language: English DOI: 10.1016/j.saa.2014.06.066 ISSN: 1386-1425 Origination: Footnote: