GERMANY - Deutsche Bundesbank President Ernst Welteke believes the economies of the U.S. and Europe are likely to slow further after the 11 September terrorist attacks on New York and Washington."In the short term it must be expected that the economic slowdown that was already underway becomes worse in the U.S. and Europe," Welteke said in an interview to be published in the 28 September edition of French daily newspaper Le Figaro.But Welteke said, "The U.S. economy is robust enough to