* theory.html (Calendrical issues): Update Reingold & Dershowitz citation to 4th edition. --- theory.html | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/theory.html b/theory.html index 4d8726d..596b32c 100644 --- a/theory.html +++ b/theory.html @@ -1155,10 +1155,10 @@ based on guesswork and these guesses may be corrected or improved. Calendrical issues are a bit out of scope for a time zone database, but they indicate the sort of problems that we would run into if we extended the time zone database further into the past. -An excellent resource in this area is Nachum Dershowitz and Edward M. -Reingold, <cite><a -href="https://www.cs.tau.ac.il/~nachum/calendar-book/third-edition/">Calendrical -Calculations: Third Edition</a></cite>, Cambridge University Press (2008). +An excellent resource in this area is Edward M. Reingold +and Nachum Dershowitz, <cite><a +href="https://www.cambridge.org/fr/academic/subjects/computer-science/computing-general-interest/calendrical-calculations-ultimate-edition-4th-edition">Calendrical +Calculations: The Ultimate Edition</a></cite>, Cambridge University Press (2018). Other information and sources are given in the file '<code>calendars</code>' in the <code><abbr>tz</abbr></code> distribution. They sometimes disagree. -- 2.7.4