@article{katz-murphy-1992,
  title = {{Changes in Relative Wages, 1963–1987: Supply and Demand Factors}},
  author = {Lawrence F. Katz and Kevin M. Murphy},
  year = {1992},
  journal = {Quarterly Journal of Economics},
  volume = {107},
  number = {1},
  pages = {35--78}
}