@misc{indiciae63452dfbbeea,
  title = {Reasoning about data with directed graphs.},
  author = {D Tritchler},
  year = {1999},
  doi = {10.1002/(sici)1097-0258(19990830)18:16<2067::aid-sim182>3.0.co;2-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/10441763/},
  note = {Source identifier: 10441763}
}