@misc{indiciae264f56057d1d,
  title = {What is a paradigm and when does it shift?},
  author = {A M Katz and L A Katz},
  year = {1991},
  doi = {10.1016/0022-2828(91)90164-h},
  url = {https://pubmed.ncbi.nlm.nih.gov/1942077/},
  note = {Source identifier: 1942077}
}