05/09/2003 (Agence Europe) - Lars Heikensten, Governor of the Riksbank, the Swedish Central Bank, called on Thursday for a "yes" vote to the referendum on single currency. "As I see things, Sweden's influence has considerably declined. At the same time, the importance of the European Union as such has increased", he explained in a personal opinion published at the bank. He said: "if we say no to accession, perhaps not for always but at least for the immediate future, the situation will...