@InCollection{Lieber&Syverson_OHDE_12,
  Title                    = {Online vs. Offline Competition},
  Author                   = {Lieber, Ethan M.J. and Syverson, Chad},
  Booktitle                = {The Oxford Handbook of the Digital Economy},
  Publisher                = {Oxford University Press},
  Year                     = {2012},
  Editor                   = {Peitz, Martin and Waldfogel, Joel},
  Pages                    = {189--223}
}