@misc{indiciae78604bfd26fa,
  title = {Propagating distributions up directed acyclic graphs.},
  author = {E B Baum and W D Smith},
  year = {1999},
  doi = {10.1162/089976699300016881},
  url = {https://pubmed.ncbi.nlm.nih.gov/9950730/},
  note = {Source identifier: 9950730}
}