Geotechnical aspects of underground construction in soft ground : proceedings of the 5th International Conference of TC28 of the ISSMGE, the Netherlands, 15-17 June 2005 / by International Conference of TC28 of the ISSMGE, (5th : The Netherlands), Bakker, K. J., International Society of Soil Mechanics and Geotechnical Engineering. Technical Committee 28 "Underground Construction in Soft Ground"