1. A. Bobenko, Discrete conformal maps and surfaces, GANG preprint IV.27, Proceedings SIDE II Conference, Cambridge Univ. Press, 1996, eds. P. Clarkson, F. Nijho , to appear.
2. A. Bobenko and U. Pinkall, Discretization of surfaces and integrable systems, SFB 288 preprint 296 (1998), to appear in Discrete integrable geometry and physics, Oxford Univ. Press, eds. A. Bobenko, R. Seiler.
3. An algebro-geometric interpretation of the Bäcklund-transformation for the Korteweg-de Vries equation