@article{abiteboul2009expressiveness,
  title={\href{https://pierre.senellart.com/publications/abiteboul2009expressiveness.pdf}{On the Expressiveness of Probabilistic {XML} Models}},
  author={Serge Abiteboul and Benny Kimelfeld and Yehoshua Sagiv and Pierre Senellart},
  journal={VLDB Journal},
  volume={18},
  number={5},
  pages={1041--1064},
  month=oct,
  year={2009},
}