@InProceedings{stone-gross11:clickfraud,
  author = 	 {Brett Stone-Gross and Ryan Stevens and Richard Kemmerer and Christopher Kruegel and Giovanni Vigna and Apostolis Zarras},
  title = 	 {{Understanding Fraudulent Activities in Online Ad Exchanges}},
  booktitle = {Proceedings of the Internet Measurement Conference (IMC)},
  year = 	 2011,
  address = 	 {Berlin, Germany},
  month = 	 {November}}