"Luchtmacht gaat de ruimte in" [Airforce goes to space]. defensie.nl (in Dutch). 30 November 2017. Archived from the original on 3 December 2017. Retrieved 4 December 2017.
"Luchtmacht gaat de ruimte in" [Airforce goes to space]. defensie.nl (in Dutch). 30 November 2017. Archived from the original on 3 December 2017. Retrieved 4 December 2017.