Optik - International Journal for Light and Electron Optics
Optik - International Journal for Light and Electron Optics > 2011 > 122 > 1 > 44-48
Optik - International Journal for Light and Electron Optics > 2011 > 122 > 2 > 125-127
Optik - International Journal for Light and Electron Optics > 2011 > 122 > 11 > 941-944
Optik - International Journal for Light and Electron Optics > 2011 > 122 > 16 > 1407-1411