T. Brox, A. Bruhn, and J. Weickert. Proceedings of European Conference on Computer Vision (ECCV 2006). Lecture Notes in Computer Science, 3951, Springer, (2006)
A. Hub, S. Kombrink, and T. Ertl. Proceedings of the 1st Multi-disciplinary Vision Rehabilitation and Research Conference ENVISION 06; September 21-24; Kansas City, MO, USA, (2006)