@article{ZenderMetzlerLucke2014,
  author    = {Raphael Zender and Richard Metzler and Ulrike Lucke},
  title     = {FreshUP-A pervasive educational game for freshmen},
  journal   = {Pervasive and mobile computing},
  volume    = {14},
  pages     = {47 -- 56},
  doi       = {10.1016/j.pmcj.2013.09.003},
  year      = {2014},
}