Optik - International Journal for Light and Electron Optics
Optik - International Journal for Light and Electron Optics > 2012 > 123 > 9 > 779-783
Optik - International Journal for Light and Electron Optics > 2012 > 123 > 11 > 956-963
Optik - International Journal for Light and Electron Optics > 2012 > 123 > 15 > 1382-1384
Optik - International Journal for Light and Electron Optics > 2012 > 123 > 24 > 2269-2271