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month = {May},  pages = {1747-1757},  }  @inproceedings{Fosteretal10,   author = {Foster, Derek and Linehan, Conor and Kirman, Ben and Lawson, Shaun and James, Gary},   title = {{Motivating physical activity at work: using persuasive social media for competitive step counting}},   booktitle = {Proceedings of the 14th International Academic MindTrek Conference: Envisioning Future Media Environments},   series = {MindTrek '10},   year = {2010},   location = {Tampere, Finland},   pages = {111--116},   numpages = {6},   url = {http://doi.acm.org/10.1145/1930488.1930510},   doi = {10.1145/1930488.1930510},   publisher = {ACM},   }