@article{acompleteclassificationofthecomplexity,
  title = {A Complete Classification of the Complexity and Rewritability of Ontology-Mediated Queries based on the Description Logic EL},
  author = {Carsten Lutz and Leif Sabellek},
  year = {2019},
  eprint = {1904.12533},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1904.12533v1},
}