M8 Harthill Footbridge
- Smooth steel. In: Bridge Design & Engineering, v. 15, n. 54 (1. Quartal 2009), S. 35.
- Structural Design of Helical Steel Footbridges. Vorgetragen bei: Footbridge 2014 - Past, Present & Future, London, 16-18 July 2014. (2014):
- Twisting lift. In: Bridge Update, n. 79 (Oktober 2008), S. 4.