1) Sydney, August 1-6, 1983: ''Energy efficient buildings with earth shelter protection'';
2) Minneapolis, June 16-19, 1986: ''Advances in geotectural design: Second International earth sheltered buildings Conference'';
3) Shanghai, 1988: ''New developments of underground space use''. Tongji University;
4) Tokyo, December 3-5, 1991: ''Urban Underground Utilization '91: 4th International Conference on underground space and earth sheltered buildings''. Underground Space Center of Japan;
5) Delft, August 3-5, 1992: ''5th International Conference on Underground Space and Earth Sheltered Structures''. Delft University;
6) Paris, September 26-29, 1995: ''Underground Space and Urban Planning''. Laboratoire Th¨Ļorie des Mutations Urbaines, Institut Fran ais d'Urbanisme;
7) Montreal, Sept. 29-Oct. 3, 1997: ''Underground Space: Indoor Cities of Tomorrow". Urban Planning Department of the City of Montreal;
8) Xi'An, September 27-30, 1999: ''Agenda and Prospect of the Underground Space for the Turn of the Century''. College of Architecture, Xi'An University of Architecture and Technology.
9) Torino, November 14-16, 2002:Urban Underground Space: a Resource for Cities. Politecnico di Torino, and the Associazione Georisorse e Ambiente
10) Moscow, January 24-28, 2005:Underground Space: Economy and Environment. Moscow State University of Civil Engineering |