@article{article, title = {{Erbium photoluminescence in sol-gel derived titanium dioxide films}}, url = {{}}, year = {{1999}}, month = {{1}}, author = {{Gaponenko NV and Sergeev OV and Misiewicz J and Gnaser H and Heiderhoff R and Cramer RM and Balk LJ and Dunbar A and Hamilton B}}, volume = {{3725}}, journal = {{Proceedings of SPIE - The International Society for Optical Engineering}}, pages = {{239-242}}, note = {{Accessed on 2025/05/24}}}