@inproceedings{CHI-2015-DergousoffM,
	author        = "Kristen K. Dergousoff and Regan L. Mandryk",
	booktitle     = "{Proceedings of the 33rd ACM SIGCHI Conference on Human Factors in Computing Systems}",
	doi           = "10.1145/2702123.2702296",
	isbn          = "978-1-4503-3145-6",
	pages         = "1065--1074",
	publisher     = "{ACM}",
	title         = "{Mobile Gamification for Crowdsourcing Data Collection: Leveraging the Freemium Model}",
	year          = 2015,
}