Rosenbaum, M., Lu, P., Doyle, P. and Barton, P. (2001). The Impact of Old Military Tunnels on Buildings at the Town of Niewpoort, Belgium. Proceedings of the 7th. International Conference on Inspection, Appraisal, Repairs & Maintenance of Buildings & Structures, 11-13 September 2001, Nottingham, UK. Ms. 557-564.