@article{LehmannScheffler2016,
  author    = {Andreas Lehmann and Christiane Scheffler},
  title     = {What does the mean menarcheal age mean?An analysis of temporal pattern in variability in a historical swiss population from the 19th and 20th centuries},
  journal   = {American journal of human biology : the official journal of the Human Biology Council},
  volume    = {28},
  pages     = {705 -- 713},
  doi       = {10.1002/ajhb.22854},
  year      = {2016},
}