Conjunctive query containment over trees

Björklund, H., Martens, W., & Schwentick, T. (2010). Conjunctive query containment over trees. Journal of Computer and System Sciences, 77(3), 450–472. https://doi.org/10.1016/j.jcss.2010.04.005

Björklund, Henrik, et al. “Conjunctive query containment over trees.” Journal of Computer and System Sciences, vol. 77, no. 3, 2010, pp. 450–72, https://doi.org/10.1016/j.jcss.2010.04.005.

Björklund, Henrik, Wim Martens, and Thomas Schwentick. 2010. “Conjunctive query containment over trees.” Journal of Computer and System Sciences 77 (3): 450–72. https://doi.org/10.1016/j.jcss.2010.04.005.

Björklund, H., Martens, W. and Schwentick, T. (2010) ‘Conjunctive query containment over trees’, Journal of Computer and System Sciences, 77(3), pp. 450–472. Available at: https://doi.org/10.1016/j.jcss.2010.04.005.

@article{bjorklund2010conjunctive,
  title = {{Conjunctive query containment over trees}},
  author = {Björklund, Henrik and Martens, Wim and Schwentick, Thomas},
  journal = {Journal of Computer and System Sciences},
  volume = {77},
  number = {3},
  pages = {450--472},
  year = {2010},
  doi = {10.1016/j.jcss.2010.04.005}
}