@phdthesis{Schefels2013,
  author      = {Clemens Schefels},
  title       = {Analyzing user feedback of on-line communities},
  type        = {doctoralthesis},
  pages       = {236},
  school      = {Universit{\"a}tsbibliothek Johann Christian Senckenberg},
  year        = {2013},
}