Optik - International Journal for Light and Electron Optics
Optik - International Journal for Light and Electron Optics > 2011 > 122 > 7 > 610-615
Optik - International Journal for Light and Electron Optics > 2011 > 122 > 7 > 620-625
Optik - International Journal for Light and Electron Optics > 2011 > 122 > 18 > 1598-1602