@techreport{paris2019paris, title = {Paris Region Key Figures 2019} author = {Paris Region Entreprises, the Paris Île-de-France Regional Chamber of Commerce and Industry, and the Paris Region Urban Planning and Development Agency (IAU île-de-France)}, url = {https://chooseparisregion.org/wp-content/uploads/2019/10/Paris-Region-Key-Figures-2019-BD.pdf}, year = {2019} }