summaryrefslogtreecommitdiff
path: root/lisp/calendar/cal-iso.el
diff options
context:
space:
mode:
authorPaul Eggert <eggert@twinsun.com>1997-12-16 19:12:36 +0000
committerPaul Eggert <eggert@twinsun.com>1997-12-16 19:12:36 +0000
commita96a5fca077aae6ccb85e1a6cbb177053692d6ca (patch)
tree32eaf8b0dcc7f46fafff4ca005a46f2391d44892 /lisp/calendar/cal-iso.el
parent2b20743d79533eb9a339f2e4026a6b10185c0fec (diff)
downloademacs-a96a5fca077aae6ccb85e1a6cbb177053692d6ca.tar.gz
Add reference to new Calendrical Calculations book.
Diffstat (limited to 'lisp/calendar/cal-iso.el')
-rw-r--r--lisp/calendar/cal-iso.el6
1 files changed, 5 insertions, 1 deletions
diff --git a/lisp/calendar/cal-iso.el b/lisp/calendar/cal-iso.el
index 130f5bc97d8..92698b7af30 100644
--- a/lisp/calendar/cal-iso.el
+++ b/lisp/calendar/cal-iso.el
@@ -1,6 +1,6 @@
;;; cal-iso.el --- calendar functions for the ISO calendar.
-;; Copyright (C) 1995 Free Software Foundation, Inc.
+;; Copyright (C) 1995, 1997 Free Software Foundation, Inc.
;; Author: Edward M. Reingold <reingold@cs.uiuc.edu>
;; Keywords: calendar
@@ -28,6 +28,10 @@
;; This collection of functions implements the features of calendar.el and
;; diary.el that deal with the ISO calendar.
+;; Technical details of all the calendrical calculations can be found in
+;; ``Calendrical Calculations'' by Nachum Dershowitz and Edward M. Reingold,
+;; Cambridge University Press (1997).
+
;; Comments, corrections, and improvements should be sent to
;; Edward M. Reingold Department of Computer Science
;; (217) 333-6733 University of Illinois at Urbana-Champaign