Optik - International Journal for Light and Electron Optics
Optik - International Journal for Light and Electron Optics > 2010 > 121 > 3 > 239-245
Optik - International Journal for Light and Electron Optics > 2010 > 121 > 10 > 938-943
Optik - International Journal for Light and Electron Optics > 2010 > 121 > 19 > 1789-1793