[1] 漢字字体規範史データセット (2018-07-23 17:41:12 +09:00) <http://www.hng-data.org/index.ja.html>
[2] HNG / hng-data · GitLab (2018-09-07 02:14:11 +09:00) <https://gitlab.hng-data.org/HNG/hng-data>