@InProceedings{ampvz06,
  author = 	 {Deepak~Agarwal and Andrew~McGregor and Jeff~M.~Phillips and Suresh~Venkatasubramanian and Zhengyuan~Zhu },
  title = 	 {Spatial Scan Statistics: Approximations and Performance Study},
  booktitle = 	 {Proc. 12th ACM SIGKDD Conf. on Knowledge Discovery and Data Mining},
  year =	 2006,
  month =	 {August}
}