@book{han-nom-d8-edg5-9205,
  title = {Phát hỏa quan đan 發火關單},
  url = {https://www.viet-dien.com/t/han-nom-d8-edg5-9205/4},
  pages = {4},
  note = {held by Columbia University Libraries},
  urldate = {2026-09-06},
}