1. https://www.citylab.com/transportation/2016/09/manhattan-commutes-port-authority-bus-terminal-capacity-study/501515/ JOHN METCALFE SEP 26, 2016 The Many Ways People Commute to New York
2. https://www.panynj.gov/path/smartlink.html Smartlink
3. https://en.wikipedia.org/wiki/PATH_(rail_system)
6.https://en.wikipedia.org/wiki/Telecommunication_transaction_processing_systems