@incollection{DeckerMeierChristetal.2015,
  author    = {Eva Decker and Barbara Meier and Andreas Christ and Gisela Hillenbrand and Stephan Claus and Robert Koschig},
  title     = {Smartphones Welcome! Preparatory Course in Mathematics using the Mobile App MassMatics. Case Study},
  series = {Mobile Learning and Mathematics},
  editor    = {Helen Crompton and John Traxler},
  isbn      = {978-0-415-74280-1},
  pages     = {47 -- 60},
  year      = {2015},
  language  = {en}
}