Greece Economic Case suggest a way out Debt and back to economic growth for Greece?

Greece Economic Case suggest a way out Debt and back to economic growth for Greece?
Differentiate between the absolute and relative sizes of the Greek public debt? Why is the differentiation important? What will be better for Greece, refinancing the debt or retiring the debt and what would be the cost? How does Greek internally held public debt differ from an externally held public debt? Compare and Contrast the effects of retiring an internally held debt and retiring an externally held debt.