@article{smith2025concentration,
  title   = {The Evolution of {U.S.} Retail Concentration},
  author  = {Smith, Dominic and Ocampo, Sergio},
  journal = {American Economic Journal: Macroeconomics},
  year    = {2025},
  doi     = {10.1257/mac.20220249},
  url     = {https://www.aeaweb.org/articles?id=10.1257/mac.20220249}
}