%0 Report %A Usábel Rodrigo, Miguel Arturo %T Approximations for multivariate characteristics of classical risk ruin processes %J Documentos de Trabajo de la Facultad de Ciencias Económicas y Empresariales %D 1998 %@ 2255-5471 %U https://hdl.handle.net/20.500.14352/64131 %X Multivariate characteristic of risk processes are of high interest to academic actuaries. In such modele the probability of ruin ie obtained not only considering initial reserves u but the severity of ruin y and the surplus before ruin x. This ruin probability can be expressed using an integral equation that can be efficiently solved using Gaver-Stehfest method of invertig Laplace transforms. %~