Mohamed Benyoucef*, Verena Zuerbig, Johann P Reithmaier, Tim Kroh, Andreas W Schell, Thomas Aichele and Oliver Benson
* Corresponding author: Mohamed Benyoucef m.benyoucef@physik.uni-kassel.de
Nanoscale Research Letters 2012, 7:493 doi:10.1186/1556-276X-7-493