Christian Hagen
- Puente Nigale über eine Meerenge in Venezuela. Kombination aus Eisenbahn- und Straßenbrücke. In: Brückenbau, v. 9, n. 1-2 ( 2017). (2017):
- (2014): Puente Nigale Main Bridges: Long Span Precast Segmental Cable Stayed Bridges for Railway and Roadway. Presented at: IABSE Symposium: Engineering for Progress, Nature and People, Madrid, Spain, 3-5 September 2014.