Ralph Kieft
- Curved directly glazed steel structure. In: Steel Construction, v. 9, n. 4 (November 2016). (2016):
- (2017): Bicycle and Pedestrian Bridge Sittard-Geleen. Vorgetragen bei: Footbridge 2017 Berlin - Tell A Story, 6-8.9.2017, Technische Universität Berlin (TU Berlin).