
« / » https://en.wikipedia.org/wiki/Sheffield_Supertram « / » https://www.emta.com/spip.php?article89 « / » https://sheffieldcityregion.org.uk/wp-content/uploads/2018/01/SCR-Transport-Strategy-Consultation-Draft.pdf « / » https://www.sheffield.gov.uk/content/dam/sheffield/docs/planning-and-development/sheffield-plan/14 UDP – Transport (part 1).pdf « / » https://www.sheffield.gov.uk/content/dam/sheffield/docs/travel-and-transport/transport-strategy/Sheffield%20Transport%20Strategy%20(March%202019)%20web%20version.pdf « / » http://www.syltp.org.uk/documents/Document%202%20-%20Networks.pdf « / » https://www.thetrams.co.uk/supertram/history.php « / » http://etheses.whiterose.ac.uk/1791/1/DX199641.pdf « / » https://eprints.soton.ac.uk/413813/1/FINAL_e_thesis_for_e_prints_SHI_26416735.pdf « / » https://backend.orbit.dtu.dk/ws/files/163239550/Ingvardson_2017_Attractiveness_of_Public_Transport_Systems_in_a_Metropolitan_Setting_PhD_thesis_.pdf « / » https://ori-nuxeo.univ-lille1.fr/nuxeo/site/esupversions/0b79a18d-7a89-4c76-91b3-9eb4b281827f « / » http://oa.upm.es/38727/1/Sara_Hernandez_del_Olmo.pdf