@inproceedings{shadbolt2013towards,
  title = "Towards a classification framework for social machines",
  author = "Shadbolt, Nigel R and Smith, Daniel A and Simperl, Elena and Van Kleek, Max and Yang, Yang and Hall, Wendy",
  year = "2013",
  booktitle = "Proceedings of the 22nd International Conference on World Wide Web",
  organization = "ACM",
  pages = "905--912",
}