@inproceedings{CKKK-ESA12,
  title = "Revenue Guarantees in Sponsored Search Auctions",
  author = "Caragiannis, Ioannis and Kaklamanis, Christos and Kanellopoulos, Panagiotis and Kyropoulou, Maria",
  year = "2012",
  booktitle = "Proceedings of the 20th European Symposium on Algorithms (ESA)",
  isbn = "978-3-642-33089-6",
  pages = "253-264",
  url = "http://dx.doi.org/10.1007/978-3-642-33090-2_23",
  doi = "10.1007/978-3-642-33090-2_23",
}