Greece's finance minister said a detailed rescue plan from other eurozone nations would be the best way to soothe market fears that his country could default on debt payments, as the EU demanded answers on how Greece used complex finance deals to massage debt, according to AP. Eurozone nations pledged last week to aid Greece «if needed to guard financial stability in the euro area» _ but did not say how they would help the country. Greece's debt problem has shaken the entire euro zone and undermined the shared currency. «My guess is that what will stop markets attacking Greece at the moment is a further more explicit message that makes operational what has been decided last Thursday,» at a meeting of EU leaders, Greek Finance Minister George Papaconstantinou said. Market worries of a default have hiked the cost of Greek government borrowing in recent months and caused the euro to slide to a near nine-month low against the dollar. Greece's credibility came under fire from the European Commission on Monday, which said it wants Greece to explain by the end of February how it used complex financial deals since 2001, called currency swaps, that allegedly made its debt limits look lower. A Feb. 1 report commissioned by the Greek finance ministry also warned of «significant debt revisions» for 2009 statistics due to swaps, debt to suppliers and state-guaranteed loans that may default. It said some swaps are now «being done in order to transfer interest from the current year to the future, with long-term loss to the Greek state.» EU spokesman Amadeu Altafaj Tardio said such swaps weren't illegal unless the Greece was not using market rates to calculate the exchange rates used for the swaps. Greece never told the EU that it was using the swaps to mask debt, he said. Papaconstantinou said some of the derivative contracts used in the past «were at the time legal and Greece was not the only country» using them. He said they have now «been made illegal and Greece has not used them since.» He said the government now does not want to use financing that is not approved by the EU statistics agency Eurostat. «We do want to restore credibility,» he said. «We have enough trouble as it is convincing people that our numbers are real.» The Greek government is also trying to prove that it can solve its problems on its own. It says isn't asking for a bailout and won't need one. But Papaconstantinou said he would like to see the 16 countries that use the euro «work out a mechanism so that if necessary the mechanism will be there» for any member that cannot pay its debts. «I think this is the logical way of addressing the issue,» he told an audience of European Union policy makers at a European Policy Centre think-tank event in Brussels. He said last week's statement was a «watershed» because it showed that «in the eurozone, no one country is alone and when it comes down to it they stick together.» He blamed financial markets for exaggerating Greece's debt worries, saying Greece's economic output is just over 2 percent of the euro area's and a default «would not ... create a problem for the euro area.» «Any country is prey and will be prey to speculative forces,» he said. «Today it's Greece, tomorrow it could be another country.»