Backstage - Designing a Backchannel for Large Lectures

@inproceedings{GehlenBaum2012BackstageD,
  title={Backstage - Designing a Backchannel for Large Lectures},
  author={Vera Gehlen-Baum and Alexander Pohl and Armin Weinberger and François Bry},
  booktitle={EC-TEL},
  year={2012}
}