@article{DuekingTaflerWallmannSperlichetal.2020,
  author    = {Peter D{\"u}king and Marie Tafler and Birgit Wallmann-Sperlich and Billy Sperlich and Sonja Kleih},
  title     = {Behavior Change Techniques in Wrist-Worn Wearables to Promote Physical Activity: Content Analysis},
  journal   = {JMIR Mhealth and Uhealth},
  volume    = {8},
  number    = {11},
  doi       = {10.2196/20820},
  year      = {2020},
}