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El empleo de los titulados superiores
Paradela Gonzales, Luis F., (1983)
Measuring the effects of cognitive ability
Cawley, John H., (1996)
A reanalysis of The Bell Curve
Korenman, Sanders, (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)