@misc{ruemelin2013mc,
  author = {Sonja R\"umelin, Valerie Kroner, Andreas Butz},
  title  = {Simple Nonvisual Interaction on Touch Tablets},
  booktitle = {In Proceedings of Mensch und Computer 2013, Sept 8 - 11, 2013, Bremen, Germany.},
  series = {Mensch und Computer '13},
  year   = {2013},
  }