Stresses that increased flexibility should be applied by the parties concerned in the development of innovative approaches to reduce the debt burden of developing countries, including, as appropriate, the identification of possible regulatory impediments, and that measures such as the introduction of various forms of new financial instruments and of formulas that do not add to the stock of debt, including those devised by banks and debtors to take advantage of discounts prevailing in the secondary market, should be further pursued, and emphasizes that banks should be encouraged to co-operate flexibly with debtor countries according to individual circumstances to achieve this end;