@article{RietschGodinaScheffler2013,
  author    = {Katrin Rietsch and Elena Godina and Christiane Scheffler},
  title     = {Decreased external skeletal robustness in schoolchildren : a global trend? Ten year comparison of Russian and German data},
  url       = {http://www.plosone.org/article/info\%3Adoi\%2F10.1371\%2Fjournal.pone.0068195},
  year      = {2013},
}