P. Varley
- Geology, alignment and survey. In: Proceedings of the Institution of Civil Engineers - Civil Engineering, v. 92, n. 5 (Dezember 1992). (1992):
- The investigation and design for a unique architectural space – The Chillida Cavern, Mount Tindaya, Fuerteventura. In: Tunnelling and Underground Space Technology, v. 31 (September 2012). (2012):