Optik - International Journal for Light and Electron Optics
Optik - International Journal for Light and Electron Optics > 2010 > 121 > 4 > 394-399
Optik - International Journal for Light and Electron Optics > 2010 > 121 > 9 > 853-859
Optik - International Journal for Light and Electron Optics > 2010 > 121 > 13 > 1194-1197
Optik - International Journal for Light and Electron Optics > 2010 > 121 > 22 > 2049-2052