MAP20080025359 Cousin, Areski Comparison results for exchangeable credit risk portfolios / Areski Cousin, Jean-Paul Laurent En: Insurance : mathematics and economics. - Oxford : Elsevier, 1990- = ISSN 0167-6687. - 27/06/2008 Tomo 42 Número 3 - 2008 I. Laurent, Jean-Paul . II. Title.