- Optical Materials Express, Vol. 3, Issue 4, pp. 439-451 (April 2013)
- Thomas W. H. Oates, Babak Dastmalchi, Christian Helgert, Lars Reissmann, Uwe Huebner, Ernst-Bernhard Kley, Marc A. Verschuuren, Iris Bergmair, Thomas Pertsch, Kurt Hingerl, Karsten Hinrichs