By Annika Breidthardt and George Georgiopoulos
ATHENS/BERLIN | Mon Jul 18, 2011 2:51am EDT
(Reuters) - German Chancellor Angela Merkel called on Sunday for private investors to make a major contribution to bailing out Greece, as pressure rose for radical action to cut the country's debt burden.
Officials proposed a range of schemes for Europe's bailout fund, the European Financial Stability Facility, to finance a buy-back or a swap in which private owners of Greek government bonds -- banks, insurers and other investors -- would accept cuts in the face value of their holdings.
European Central Bank Executive Board member Lorenzo Bini Smaghi suggested the EFSF be allowed to provide funds for a buy-back of bonds from the market, where prices have in some cases fallen 50 percent from levels at which the debt was issued.