@misc{indiciaec98012b4a958,
  title = {Blocking (pairing by ranks within groups) is statistically correct.},
  author = {F M Henry},
  year = {1977},
  doi = {10.1080/10671315.1977.10762177},
  url = {https://pubmed.ncbi.nlm.nih.gov/266243/},
  note = {Source identifier: 266243}
}