@incollection{Saatz2013,
  author    = {Inga Saatz},
  title     = {Linking mobile learning and offline interaction},
  series = {Proceedings of the 2013 ACM conference on pervasive and ubiquitous computing adjunct publication},
  publisher = {ACM},
  address   = {New York},
  year      = {2013},
  language  = {en}
}