Countries with references

• Australia
• Belgium
• Canada
• China PRC
• Ecuador
• Egypt
• France
• Germany
• Holland
• Indonesia
• Japan
• Korea
• Lebanon
• Libia
• Malaysia
• Moldavia
• Morocco
• Myanmar
• Philippines
• Poland
• Russia
• Samoa (U.S.A.)
• Saudi Arabia
• Singapore
• Spain
• Taiwan
• Thailand
• United Kingdom
• U.S.A.
• Yemen