@PROCEEDINGS{streng2008elearningHS,
   editor = {Alina Hang, Daniel Buschek, Alenxader De Luca, Axel Hösl, Sebastian Löhmann, Henri Palleis, Simon Stusak, Sarah Tausch},   title = {Special Aspects of Usability},
   address = {Munich, Germany},
   year = {2014},
}