@article{AugsteKuenzell2014,
  author    = {Claudia Augste and Stefan K{\"u}nzell},
  title     = {Seasonal variations in physical fitness among elementary school children},
  journal   = {Journal of Sports Sciences},
  volume    = {32},
  number    = {5},
  pages     = {415 -- 423},
  doi       = {10.1080/02640414.2013.830189},
  year      = {2014},
}