@misc{648,
  author = {Bernhard Hoisl},
  title = {Motivate online community contributions using social rewarding techniques : a focus on Wiki systems},
  year = {2007},
  journal = {Institute of Visual Computing and Human-Centered Technology},
  pages = {154},
  publisher = {TU Wien},
  address = {Vienna},
  url = {https://web.archive.org/web/20210417124910/http://ieg.ifs.tuwien.ac.at/projects/SocialRewarding/},
}