@inbook{hilty2015the,
  title = {The Transition from Desktop Computers to Tablets: A Model for Increasing Resource Efficiency?}
  author = {Hilty, Lorenz M. and Aebischer, Bernard and Hischier, Roland and Wäger, Patrick A.},
  url = {http://link.springer.com/10.1007/978-3-319-09228-7_14},
  year = {2015}
}