The relative age effect in youth soccer across Europe

@article{Helsen2005TheRA,
  title={The relative age effect in youth soccer across Europe},
  author={Werner F. Helsen and Jan van Winckel and A. Mark Williams},
  journal={Journal of Sports Sciences},
  year={2005},
  volume={23},
  pages={629 - 636}
}
The potential asymmetries in the birth-date distributions of youth soccer players across ten European countries (2175 age citations) were considered. First, we examined the birth-dates of players representing national youth teams in international competitions. Second, the birth-dates of players representing professional club teams in international youth tournaments were analysed. Kolmogorov-Smirnov tests were used to assess differences between observed and expected birth-date distributions… 

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