@inproceedings{abiteboul2010aggregate,
  title={Aggregate Queries for Discrete and Continuous Probabilistic {XML}},
  author={Serge Abiteboul and T-H. Hubert Chan and Evgeny Kharlamov and Werner Nutt and Pierre Senellart},
  booktitle={Proc.\ {ICDT}},
  address={Lausanne, Switzerland},
  pages={50--61},
  month=mar,
  year={2010},
}