@article{KaufmannHolzKuebler2013,
  author    = {Tobias Kaufmann and Elisa M. Holz and Andrea K{\"u}bler},
  title     = {Comparison of tactile, auditory, and visual modality for brain-computer interface use: a case study with a patient in the locked-in state},
  journal   = {Frontiers in Human Neuroscience},
  doi       = {10.3389/fnins.2013.00129},
  year      = {2013},
}