 This "Moscow agreement" declared that all signatory countries considered themselves bound by the UCC as of the date the USSR had joined and would confirm this state with the UNESCO, which administered the UCC.The treaty also defined that the treaty states would apply the UCC amongst themselves, also for works published before May 27, 1973 if those works had been copyrighted before this date according to the national laws of the successor states.This provision was subject to the rule of the shorter term.