Wolfgang Baltzer
- The case for immersed tubes. Dans: Tunnels & Tunnelling International (mai 2003). (2003):
- Fixed Crossing of the Warnow River. First DBFO Highway Concession Contract in Germany. Présenté pendant: AITES-ITA World Tunnel Congress — Progress in Tunnelling After 2000, Milan, 10-13/06/2001. (2001):