Harm Male Athletes?, American Economic Review, Papers and Proceedings, May, 307-311. -- Andreff M., W. Andreff and S … Management Quarterly, 6 (1), 23-34. -- Dilger A., B. Frick and F. Tolsdorf (2007), Are Athletes Doped? Some Theoretical Arguments … Economics, 6 (2), 119-143. -- Groothuis P.A. and R. Hill (2004), Exit Discrimination in the NBA: A Duration Analysis of Career …