https://edition.cnn.com/travel/article/hong-kong-mtr-success-story/index.html
https://money.cnn.com/2015/03/30/news/hong-kong-mtr-subway-property/index.html
https://www.citymetric.com/transport/no-hong-kong-has-best-transport-system-world-mtr-trams-boats-4148
https://www.hongkong.net/transportation
https://www.scmp.com/news/hong-kong/community/article/2131681/how-did-hong-kongs-public-transport-system-become-so
https://www.theatlantic.com/china/archive/2013/09/the-unique-genius-of-hong-kongs-public-transportation-system/279528/
https://shanghaiist.com/2017/11/02/hong-kong-best-public-transport/

Índice de movilidad mostrado en el video:
file:///C:/Users/PC%20SAHIR/Pictures/Confederaci%C3%B3n%20de%20Rep%C3%BAblicas%20Hispanoamericanas/Videos/QU%C3%89%20APRENDER%20DE/HONG%20KONG/sustainable-cities-mobility-index_spreads.pdf