| 2nd Islamic Astronomical Conference [Jordan] 29-31 October 2001 | The Observatory, [UK], August 2003, Vol 123, No |
|---|---|
| , 2008, New World Rrecord for Observing New Moon in The Kingdom of Saudi Arabia, JAAUBAS, 5, 73-77 | , 2005, The Observatory, Lunar Calendars: The New Saudi Arabian Criterion, 125, 25 |