[3] Common Lisp のプログラムが収録された論文。詳しくは >>4 参照。
[11] Calendrical Calculations, , https://web.archive.org/web/19970506103850/http://emr.cs.uiuc.edu/home/reingold/calendar-book/
[15] Wayback Machine, https://web.archive.org/web/20030425150052/http://emr.cs.iit.edu/home/reingold/calendar-book/second-edition/errata.pdf
[12] Emacsと暦 - Qiita, https://qiita.com/kawabata@github/items/04c67296123c6394a273
[5] 旧暦に対応しているが、 >>1 は中国暦の簡単な説明だけなので、 このソフトウェアでの独自部分。
[6] GitHub - kyungbae/calendar: Old Calendar gem (1.11.4), https://github.com/kyungbae/calendar
[7] calendar/qref.c at master · kyungbae/calendar · GitHub, https://github.com/kyungbae/calendar/blob/master/ext/calendar/qref.c