MAP20110070502 Landriault, D. Joint densities involving the time to ruin in the Sparre Andersen risk model under exponential assumptions / D. Landriault, T. Shi, G.E. Willmot En: Insurance : mathematics and economics. - Oxford : Elsevier, 1990- = ISSN 0167-6687. - 01/11/2011 Tomo 49 Número 3 - 2011