万国著作権条約
The accession of the USSR to the Universal Copyright Convention, which became effective on May 27, 1973, was a major turning point. Copyright was extended to also cover works of foreign authors that were first published abroad after that date, and the freedom of translation had to be abolished. For the first time in history, Russia (as a republic within the Soviet Union) had joined a multilateral, international copyright treaty, ending the country's self-imposed isolation (but also its independence) in copyright matters.