
The Urban Edge, « Metros in Developing cities », in the issues & innovations, vol. 14, N°1, Feb. 1990, 7 p. « / » https://ppiaf.org/sites/ppiaf.org/files/documents/toolkits/Cross-Border-Infrastructure-Toolkit/Cross-Border%20Compilation%20ver%2029%20Jan%2007/Resources/GTZ%20-%20Mass%20Transit%20Options.pdf « / » https://vbn.aau.dk/ws/portalfiles/portal/14076659/Comparison_of_Capital_Costs.pdf « / » https://documents1.worldbank.org/curated/en/695111468024545450/pdf/892000BRI0Box3000china0transport09.pdf « / » https://tunnelbuilder.com/metrosur/edition2pdf/page2.pdf « / » https://arxiv.org/ftp/arxiv/papers/1304/1304.4476.pdf « / » https://www.brookings.edu/wp-content/uploads/2016/06/BrookingsAIG-Roundtable.pdf « / » […]