//-->
The union membership wage premium puzzle : is there a free-rider problem?
Booth, Alison L., (2001)
The Union Membership Wage-Premium Puzzle : Is There a Free Rider Problem?
Booth, Alison L., (2004)
Unions and the sword of justice : unions and pay systems, pay inequality, pay discrimination and low pay
Metcalf, David, (2000)
Training in Europe
Arulampalam, Wiji, (2003)
Who pays for general training? : New evidence for British men and women
Booth, Alison L., (2002)
Are there asymmetries in the effects of training on the conditional male wage distribution?
Arulampalam, Wiji, (2004)