Optik - International Journal for Light and Electron Optics
Optik - International Journal for Light and Electron Optics > 2015 > 126 > 20 > 2659-2662
Optik - International Journal for Light and Electron Optics > 2018 > 155 > C > 149-156
Optik - International Journal for Light and Electron Optics > 2018 > 157 > C > 1357-1365