[3] [CITE@en[Datetimes. The draft ISO 8601-201x and EDTF. · Issue #656 · plk/biblatex · GitHub]], [TIME[2022-06-28T02:48:38.000Z]] <https://github.com/plk/biblatex/issues/656>

[1] [CITE@en[Should we create an Open Datetime Format? · Issue #1 · JohnLukeBentley/open-datetime-standard-bootstrap]]
([TIME[2019-05-08 18:02:35 +09:00]])
<https://github.com/JohnLukeBentley/open-datetime-standard-bootstrap/issues/1>

[4] [CITE[Bibliographic Datetime Format (BDF) - BibliographicDatetimeFormat.pdf]], [TIME[2022-06-28T03:10:27.000Z]] <https://raw.githubusercontent.com/JohnLukeBentley/open-datetime-standard-bootstrap/v0.1.2-draft/BibliographicDatetimeFormat.pdf>

[2] [CITE@en[open-datetime-standard-bootstrap/BibliographicDatetimeFormat.pdf at master · JohnLukeBentley/open-datetime-standard-bootstrap]] ([TIME[2019-05-08 18:44:27 +09:00]]) <https://github.com/JohnLukeBentley/open-datetime-standard-bootstrap/blob/master/BibliographicDatetimeFormat.pdf>