@techreport{Chao2012C,
  title = {{C-Flow: Visualizing Foot Traffic and Profit Data to Make Informative Decisions}},
  author = {Chao, Tiffany and Du, Ruofei and Gluck, Jonathan and Maidasani, Hitesh and Wills, Kent and Shneiderman, Ben},
  institution = {University of Maryland, College Park. Department of Computer Science},
  year = {2012},
}