Clyde Tunnel
- Clyde Tunnel: Constructional Problems. Dans: Proceedings of the Institution of Civil Engineers, v. 30, n. 2 (février 1965), pp. 323-346, plates. (1965):
- Clyde Tunnel: Design, Construction and Tunnel Services. Dans: Proceedings of the Institution of Civil Engineers, v. 30, n. 2 (février 1965), pp. 291-322, plates. (1965):