Islamabad, Pakistan (January 27-28, 1980)
Amman, Jordan (July 11-12, 1980)
Fez, Morocco (September 18-20, 1980)
New York, the United States (October 4, 1989)
Istanbul, Turkey (June 17-18, 1992)
Jeddah, Saudi Arabia (December 1-2, 1992)
Islamabad, Pakistan (September 7-9, 1994 )
Doha, State of Qatar (May 26, 2001 )
Doha, State of Qatar (October 10, 2001 )
Doha, State of Qatar (December 10, 2001 )
Kuala Lumpur, Malaysia (April 1-3, 2002 )