@article{BiundoKI16B,
   title = {Companion-Technology: An Overview},
   author = {Susanne Biundo and Daniel H{\"{o}}ller and Bernd Schattenberg and Pascal Bercher},
   publisher = {Springer},
   journal = {K{\"{u}}nstliche Intelligenz},
   volume = {30},
   pages = {11-20},
   year = {2016}
}