1. For 2015 GDP: IMF, World Economic Outlook, October 2014; For 2010–2013 average space budgets, in: S. Bochinger (Euroconsult) (Ed.), Proceedings of the Profiles of Government Space Programmes – Analysis of over 80 countries and Agencies, Euroconsult, Paris, 2014.
2. Threats, Risks and Sustainability – Answers by Space,2009
3. Ministère de l’Education Nationale, de l’Enseignement Supérieur et de la Recherche (Ministry of National Education, Higher Education and Research), Stratégie et Recherche Spatiale, 〈http://www.enseignementsup-recherche.gouv.fr/pid26044/strategie-spatiale-francaise.html〉, last visited on 6 June 2015.
4. Bundesministerium für Wirtschaft und Energie (Federal Ministry for Economic Affairs and Energy), Raumfahrt, 〈http://www.bmwi.de/DE/Themen/Technologie/Schluesseltechnologien/raumfahrt.html〉, last visited 6 June 2015; Ministry of Employment and the Economy, Space Policy, 〈https://www.tem.fi/en/innovations/innovation_policy/eu_research_and_innovation_policy/space_policy〉, last visited 6 June 2015.
5. Ministry of Employment and the Economy, Space Policy, 〈https://www.tem.fi/en/innovations/innovation_policy/eu_research_and_innovation_policy/space_policy〉, last visited 6 June 2015; Tekes, Tekes – The Finnish Funding Agency for Innovation, 〈http://www.tekes.fi/en/tekes/〉, last visited 6 June 2015; Tekes, Tekes outlines the focus of Finnish space activities, 〈http://www.tekes.fi/en/whats-going-on/news-2013/strategy-outlines-the-focus-of-finnish-space-activities1/〉, last visited 6 June 2015; Ministry of Employment and the Economy, Finnish Space Strategy 2013–2020, 〈http://www.tem.fi/files/35756/TEMjul_3_2013_web.pdf〉, last visited 6 June 2015.