Bill Welburn
- Lines 2 and 3 of the Athens Metro. Dans: Proceedings of the Institution of Civil Engineers - Civil Engineering, v. 132, n. 2-3 (mai - août 1999). (1999):
- El Azhar road tunnel—Cairo's new frontier. Dans: Proceedings of the Institution of Civil Engineers - Civil Engineering, v. 150, n. 3 (août 2002). (2002):