%0 Journal Article %A Guerreiro, Gracinda %A Mexia, João %T An alternative approach to bonus malus %J Discussiones Mathematicae. Probability and Statistics %D 2004 %P 197-213 %V 24 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DMPS_2004_24_2_a2/ %G en %F DMPS_2004_24_2_a2