Optik - International Journal for Light and Electron Optics
Optik - International Journal for Light and Electron Optics > 2011 > 122 > 5 > 429-434
Optik - International Journal for Light and Electron Optics > 2011 > 122 > 23 > 2129-2135
Optik - International Journal for Light and Electron Optics > 2011 > 122 > 24 > 2164-2171