Ju-jitsu International Federation - J J I F
Official web site of JJIF.
JJIF Referee Group web site
Refreshed and actual rules and comments are published here, together with a lot of useful information for referees.
List of IOC Country Codes - by Wikipedia
The International Olympic Committee (IOC) uses three-letter acronym country codes to refer to each group of athletes that participate in the Olympic Games - important for the all organisers of the international/multi-national events.
Country Codes - two or three letter acronym
The 2-letter codes shown below are supplied by the ISO (International Organization for Standardization). It bases its list of country names and abbreviations on the list of names published by the United Nations. The UN also uses uses 3-letter codes, and numerical codes to identify nations, and those are shown below.