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El empleo de los titulados superiores
Paradela Gonzales, Luis F., (1983)
A reanalysis of The Bell Curve
Korenman, Sanders, (1995)
Race, children's cognitive achievement and the bell curve
Currie, Janet M., (1995)
James Heckman's contributions to economics and econometrics
Blundell, Richard W., (2001)
Causal parameters and policy analysis in economics : a twentieth century retrospective
Heckman, James J., (1999)
Three essays on the supply of labor and the demand for goods
Heckman, James J., (1971)