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-rw-r--r--lisp/calendar/cal-hebrew.el6
1 files changed, 5 insertions, 1 deletions
diff --git a/lisp/calendar/cal-hebrew.el b/lisp/calendar/cal-hebrew.el
index a8a0d6ad1df..ee4817cb933 100644
--- a/lisp/calendar/cal-hebrew.el
+++ b/lisp/calendar/cal-hebrew.el
@@ -1,6 +1,6 @@
;;; cal-hebrew.el --- calendar functions for the Hebrew calendar.
-;; Copyright (C) 1995 Free Software Foundation, Inc.
+;; Copyright (C) 1995, 1997 Free Software Foundation, Inc.
;; Author: Nachum Dershowitz <nachum@cs.uiuc.edu>
;; Edward M. Reingold <reingold@cs.uiuc.edu>
@@ -29,6 +29,10 @@
;; This collection of functions implements the features of calendar.el and
;; diary.el that deal with the Hebrew 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