@article{FuezekiSchroederGronebergetal.2021,
  author    = {Eszter F{\"u}z{\´e}ki and Jan Schr{\"o}der and Jan David Alexander Groneberg and Winfried Banzer},
  title     = {Physical activity and its related factors during the first COVID-19 lockdown in Germany},
  journal   = {Sustainability},
  volume    = {13},
  number    = {10, art. 5711},
  pages     = {1 -- 12},
  doi       = {10.3390/su13105711},
  year      = {2021},
}