Optik - International Journal for Light and Electron Optics
Optik - International Journal for Light and Electron Optics > 2012 > 123 > 12 > 1061-1062
Optik - International Journal for Light and Electron Optics > 2012 > 123 > 16 > 1482-1485
Optik - International Journal for Light and Electron Optics > 2012 > 123 > 24 > 2230-2232