Bloomberg.com, By Sotiris Nikas and Christos Ziotis, 1. 11. 2017
Under a project that could be launched in mid November, the government plans to swap 20 bonds issued after a restructuring of Greek debt held by private investors in 2012 with as many as five new fixed-coupon bonds, according to two senior bankers with knowledge of the swap plan. The bank officials requested anonymity as the plan has yet to be made public. The maturities of the new bonds may be the same as for the existing notes, which range from 2023 to 2042.
https://www.bloomberg.com/news/articles/2017-11-01/greece-is-said-to-plan-debt-swap-exercise-worth-eu30-billion