Cummings (née Deffner), Veronika, and Aurel von Richthofen. “Urban Sustainability As a Political Instrument in the Gulf Region Exemplified by Projects in Abu Dhabi”. DIE ERDE – Journal of the Geographical Society of Berlin, vol. 148, no. 4, Dec. 2017, pp. 253-67, doi:10.12854/erde-148-53.