@inproceedings{senellart2008complexity,
  title={\href{https://pierre.senellart.com/publications/senellart2008complexity.pdf}{On the Complexity of Deriving Schema Mappings from Database Instances}},
  author={Pierre Senellart and Georg Gottlob},
  booktitle={Proc.\ {PODS}},
  address={Vancouver, Canada},
  pages={23--32},
  month=jun,
  year={2008},
}