[2] PANOSE font classification system Metrics Guide: pan1, 2018-03-05T21:12:37.000Z, 2023-01-01T12:51:26.568Z https://monotype.github.io/panose/pan1.htm

[1] OS/2 - OS/2 and Windows metrics table (OpenType 1.9) - Typography | Microsoft Learn, PeterCon, 2023-01-01T12:50:58.000Z https://learn.microsoft.com/ja-jp/typography/opentype/spec/os2#panose

[3] PANOSE on the Web, 1996-05-03T21:26:28.000Z, 2024-09-07T12:50:35.267Z https://www.w3.org/Printing/stevahn.html