@article{journals/tods/GottlobKP05,
  title = "Efficient algorithms for processing {XPath} queries",
  author = "Georg Gottlob and Christoph Koch and Reinhard Pichler",
  year = "2005",
  journal = "{ACM} Trans. Database Syst.",
  number = "2",
  pages = "444-491",
  volume = "30",
  doi = "10.1145/1071610.1071614",
}