@article{muller2011seeing,
  title={Seeing similarity in the face of difference: enabling comparison of online production systems},
  author={M{\"u}ller-Birn, Claudia and Meuthrath, Benedikt and Erber, Andreas and Burkhart, Sebastian and Baumgrass, Anne and Lehmann, Janette and Schmidl, Robert},
  journal={Social Network Analysis and Mining},
  volume={1},
  number={2},
  pages={127--142},
  year={2011},
  publisher={Springer}
}