@article{HagemannGudatKunz2006, author = {Hans-J{\"u}rgen Hagemann and W. Gudat and C. Kunz}, title = {Optical constants from the far infrared to the X-ray region: Mg, Al, Cu, Ag, Au, Bi, C, and Al₂O₃}, journal = {Journal of the Optical Society of America (JOSA)}, volume = {65}, number = {6}, pages = {742 -- 744}, doi = {10.1364/JOSA.65.000742}, year = {2006}, }