Optik - International Journal for Light and Electron Optics
Optik - International Journal for Light and Electron Optics > 2010 > 121 > 14 > 1263-1267
Optik - International Journal for Light and Electron Optics > 2010 > 121 > 23 > 2159-2161
Optik - International Journal for Light and Electron Optics > 2010 > 121 > 23 > 2140-2143