Optik - International Journal for Light and Electron Optics
Optik - International Journal for Light and Electron Optics > 2010 > 121 > 8 > 715-721
Optik - International Journal for Light and Electron Optics > 2010 > 121 > 8 > 732-738
Optik - International Journal for Light and Electron Optics > 2010 > 121 > 14 > 1263-1267