https://en.wikipedia.org/wiki/CityLife_(Milan)#General_project_and_layout ,
https://skyscraperpage.com/diagrams/?cityID=834&status=15 ,
https://en.wikipedia.org/wiki/Milan_Metro#Trains ,
https://en.wikipedia.org/wiki/Milan_Metro#/media/File:Milan_Metro4.JPG ,
https://en.wikipedia.org/wiki/Milan_Metro#/media/File:Milano_metropolitana_Villa_San_Giovanni.JPG
https://en.wikipedia.org/wiki/Milan_S_Lines ,
https://en.wikipedia.org/wiki/Milan_Metro#/media/File:Milan_urban_tickets_and_smartcard.JPG
