MAP20080025106 Kötter, Mirko The Periodic risk model with investment / Mirko Kötter, Nicole Bäuerle En: Insurance : mathematics and economics. - Oxford : Elsevier, 1990- = ISSN 0167-6687. - 27/06/2008 Tomo 42 Número 3 - 2008 I. Bauerle, Nicole . II. Title.