Only one-fifth of the property that was stolen from Europe's Jews by the Nazis and their collaborators has ever been returned, leaving at least $115 billion in assets still missing, according to a new study obtained Friday by The Associated Press.

Many Western European governments paid restitution for only a fraction of the stolen real estate, investments, businesses and household items, while Eastern European countries under Soviet control paid almost nothing at all, according to the study.

Even the highly publicized campaigns over the past decade for more complete compensation barely made a dent in the problem, said the study, compiled by economist Sidney Zabludoff, a former CIA and U.S. Treasury official.