@Article{waldfogel93a,
  author = 	 {Joel Waldfogel},
  title = 	 {The Deadweight Loss of Chirstmas},
  journal = 	 {The American Economic Review},
  year = 	 1993,
  volume =	 83,
  number =	 5,
  url = 	 {http://jmvidal.cse.sc.edu/library/waldfogel93a.pdf}
}