▁S . ▁( 2 0 1 4 ). ▁The ▁Age ▁Adv antage ▁in ▁Association ▁Football . ▁Pro ceed ings ▁of ▁the ▁ 5 th ▁International ▁Conference ▁on ▁Mathemat ics ▁in ▁Sport , ▁ 2 0 1 5 , ▁ 1 0 3 - 1 0 9 . ▁ ▁Lawrence , ▁S . ▁( 2 0 1 5 ). ▁The ▁A verage ▁Team ▁Age ▁Rule ▁in ▁Youth ▁Association ▁Football . ▁ ▁Lawrence , ▁S ., ▁Jon ker , ▁L ., ▁Ver be ek , ▁J . ▁( 2 0 1 9 ). ▁The ▁Age ▁Adv antage ▁in ▁Youth ▁Football . ▁Pro ceed ings ▁of ▁the ▁ 7 th ▁International ▁Conference ▁on ▁Mathemat ics ▁in ▁Sport , ▁ 2 0 1 9 , ▁ 2 2 8 - 2 3 3 . ▁▁▁▁▁▁▁▁▁ ▁Morris , ▁J . G ., ▁Nev ill , ▁M . E . ▁A ▁Sport ing ▁Ch ance . ▁En han cing ▁opportun ities ▁for ▁high - level ▁sport ing ▁performance : ▁influence ▁of ▁' Relative ▁Age '. ▁Institute ▁of ▁Youth ▁Sport , ▁L ough borough ▁University . ▁▁▁▁▁▁▁▁▁▁▁ ▁Oak ley , ▁B . ▁( 2 0 1 2 ). ▁How ▁to ▁build ▁a ▁champion : ▁Be ▁born ▁at ▁the ▁right ▁time . ▁BBC . ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ ▁▁▁ ▁Rosen baum , ▁M . ▁( 2 0 1 2 ). ▁Month ▁of ▁B irth ▁affect s ▁chance ▁of ▁att ending ▁Ox bridge . ▁BBC . ▁ ▁Ros enberg , ▁H . ▁( 1 9 6 6 ). ▁Season al ▁variations ▁of ▁birth s .