1. Tomlinson, M. J., Tomlinson, A., Chapman, M. L., Jefferson, A. D. and Wright, H. D., Shell construction for shallow draft immersed tube tunnels. In Immersed Tunnel Techniques. Thomas Telford Ltd, London, 1990, pp. 209–220.
2. Narayanan, R., Lee, I. L., Roberts, T. M., Evans, H. R., Edwards, D. N. and Helou, A. J., Studies on steel–concrete–steel sandwich construction for submerged tube tunnels. In Options for Tunnelling 1993, ed. H. Berger, Developments in Geotechnical Engineering 74. Elsevier, Amsterdam, 1993, pp. 193–202.
3. Narayanan, R. and Roberts, T. M. Submerged tube tunnel design using steel–concrete–steel sandwich construction. In Third International Kerensky Conference on Global Trends in Structural Engineering. The Institution of Engineers Singapore, The Institution of Structural Engineers, 1994, pp. 453–459.
4. The experimental behaviour of double skin composite elements;Wright;J. Construct. Steel Res.,1991
5. The design of double skin composite elements;Wright;J. Construct. Steel Res.,1991