Optik - International Journal for Light and Electron Optics
Optik - International Journal for Light and Electron Optics > 2011 > 122 > 7 > 569-576
Optik - International Journal for Light and Electron Optics > 2011 > 122 > 10 > 891-895
Optik - International Journal for Light and Electron Optics > 2011 > 122 > 16 > 1407-1411
Optik - International Journal for Light and Electron Optics > 2011 > 122 > 17 > 1544-1551
Optik - International Journal for Light and Electron Optics > 2011 > 122 > 23 > 2136-2139