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3. Czech Ministry of Transport, http://www.mdcr.cz/en, last visited 5 August 2016.
4. Czech Space Portal, http://www.czechspaceportal.cz/en/, last visited 5 August 2016.
5. Ministry of Higher Education and Science, Denmark’s space strategy takes flight, http://ufm.dk/en/newsroom/press-releases/2016/denmarks-space-strategy-takes-flight, last visited 8 August 2016.