Aerospace Technology Institute. 2016. ‘Raising Ambition, Technology Strategy and Portfolio Update 2016’. https://www.ati.org.uk/wp-content/uploads/2017/10/Raising-Ambition-ATI-Technology-Strategy-Portfolio-Update-2016.pdf.
Clean Sky 2. n.d. ‘Clean Sky 2 Joint Undertaking Development Plan’. http://www.cleansky.eu/sites/default/files/inline-files/51.%20CS2DP%20December%202017.pdf.
European Commission. 2011. ‘Flightpath 2050 Europe’s Vision for Aviation’. https://ec.europa.eu/transport/sites/transport/files/modes/air/doc/flightpath2050.pdf.
NASA. 2015. ‘NASA Technology Roadmaps TA15 Aeronautics’. https://www.nasa.gov/sites/default/files/atoms/files/2015_nasa_technology_roadmaps_ta_15_aeronautics_final.pdf.
———. 2017. ‘NASA Aeronautics Strategic Implementation Plan’. https://www.nasa.gov/sites/default/files/atoms/files/sip-2017-03-23-17-high.pdf.
‘Strategic Research & Innovation Agenda 2017 Update’. 2017. Advisory Council for Aviation Research and Innovation in Europe (ACARE). https://www.acare4europe.org/sites/acare4europe.org/files/document/ACARE-Strategic-Research-Innovation-Volume-1.pdf.
