1. Early confirmation of stress fractures in joggers;Norfray, J.F.; Schlachter, L.; Kernahan, W.T.; Arenson, D.J.; Smith, S.; Roth, I.E.; Schelfman, M.S.;JAMA,1980
2. 1985 "Non-traumatic injuries in amateur long distance bicyclists";Weiss, B.D.;Am. J. Sports Med
3. Wear and tear injuries in athletes - an overview;Williams, J.G.P.;Br. J. Sports Med,1979