J. O'Callaghan
- Glass challenges – past, present, and future. Vorgetragen bei: 3rd International Conference on Structures and Architecture Conference (ICSA2016), School of Architecture, University of Minho, Guimarães, Portugal (July 2016). (2016):
- Procurement strategy and contract management philosophy. In: Proceedings of the Institution of Civil Engineers - Civil Engineering, v. 102, n. 6 (Januar 1994). (1994):