@misc{sumire:2610.00003:2:v6,
  author = {hora},
  title = {{The Bouton monoid}},
  year = {2026},
  note = {SUMIRE:2610.00003/2, v6},
  url = {https://sumire.aiformath.jp/p/2610.00003/n/2/v/6}
}