@misc{indiciaefe62ea62bb1a,
  title = {Undecidability and intractability in theoretical physics.},
  author = {S Wolfram},
  year = {1985},
  doi = {10.1103/physrevlett.54.735},
  url = {https://pubmed.ncbi.nlm.nih.gov/10031602/},
  note = {Source identifier: 10031602}
}