@inproceedings{CHI-2015-PritchardVO,
	author        = "Gary W. Pritchard and John Vines and Patrick Olivier",
	booktitle     = "{Proceedings of the 33rd ACM SIGCHI Conference on Human Factors in Computing Systems}",
	doi           = "10.1145/2702123.2702137",
	isbn          = "978-1-4503-3145-6",
	pages         = "907--916",
	publisher     = "{ACM}",
	title         = "{Your Money’s No Good Here: The Elimination of Cash Payment on London Buses}",
	year          = 2015,
}