Roberta J. Arena, who became Citicorp's credit card chief in January, is well on her way to fulfilling one of her goals for the world's largest bank card business.

Ms. Arena, executive vice president of Citibank's North American and European card businesses, told a group of analysts and journalists in July that she planned to step up the bank's European marketing efforts and to push for a dominant credit card market position in Germany, where the bank is just die fourth-largest provider of cards.

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