Li, X. and Zhu, H. (2007) Digital Tunnel and its Application in an Undersea Tunnel, Electronic Journal of Geotechnical Engineering, JTC2 Special Issue, http://www.ejge.com/2007/Ppr0771/Abs0771.htm.
Li, X. and Zhu, H. (2007) Digital Tunnel and its Application in an Undersea Tunnel, Electronic Journal of Geotechnical Engineering, JTC2 Special Issue.