Optik - International Journal for Light and Electron Optics
Optik - International Journal for Light and Electron Optics > 2013 > 124 > 18 > 3204-3207
Optik - International Journal for Light and Electron Optics > 2013 > 124 > 20 > 4303-4306
Optik - International Journal for Light and Electron Optics > 2018 > 157 > C > 1078-1086