Hans (J C. ). Galjaard
- (2013): Strengthening fly-over Rottepolder junction with external post-tensioning. Presented at: IABSE Conference: Assessment, Upgrading and Refurbishment of Infrastructures, Rotterdam, The Netherlands, 6-8 May 2013.
- (2013): Widening of the bridge over Zijkanaal C in highway A9 near Haarlem. Presented at: IABSE Conference: Assessment, Upgrading and Refurbishment of Infrastructures, Rotterdam, The Netherlands, 6-8 May 2013.