You seem to be attempting to access an item that has been removed from the repository.
The item you are trying to access was a duplicate of:
Ay, Feridun and Uranga, Amaia and Bradley, Jonathan D.B. and Wörhoff, Kerstin and Ridder, René M. de and Pollnau, Markus (2008) Focused ion beam nano-structuring of Bragg gratings in channel waveguides. In: First International Workshop on FIB for Photonics, 13-14 June 2008, Eindhoven, the Netherlands (pp. pp. 48-50).