@article{WallmannSperlichFroboese2014,
  author    = {Birgit Wallmann-Sperlich and Ingo Froboese},
  title     = {Physical Activity during Work, Transport and Leisure in Germany - Prevalence and Socio-Demographic Correlates},
  doi       = {10.1371/journal.pone.0112333},
  year      = {2014},
}