Louis Ballesteros
- High quality lining of World's largest shield driven tunnel. Presented at: IABSE Symposium: Structures for High-Speed Railway Transportation, Antwerp, Belgium, 27-29 August 2003. (2003):
- Tunnel ferroviaire de Groene Hart. Ligne Grande Vitesse (Pays-Bas). Groene Hart railway tunnel. High Speed Line (The Netherlands). Presented at: First fib Congress, 13-19.10.2002, Osaka, Japan. (2002):