Optik - International Journal for Light and Electron Optics
Optik - International Journal for Light and Electron Optics > 2011 > 122 > 16 > 1458-1461
Optik - International Journal for Light and Electron Optics > 2011 > 122 > 21 > 1910-1913
Optik - International Journal for Light and Electron Optics > 2011 > 122 > 23 > 2071-2074