The skill content of recent technological change: An empirical exploration. Autor, D., Levy, F., & Murnane, R. Quarterly Journal of Economics, 118(4):1279–1333, 2003.
doi  bibtex   
@article{autor_skill_2003,
	title = {The skill content of recent technological change: {An} empirical exploration},
	volume = {118},
	doi = {10.1162/003355303322552801},
	number = {4},
	journal = {Quarterly Journal of Economics},
	author = {Autor, D.H. and Levy, F. and Murnane, R.J.},
	year = {2003},
	pages = {1279--1333},
}

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