%0 Journal Article %A L. Rüschendorf %T On Upper and Lower Prices in Discrete-Time Models %J Informatics and Automation %D 2002 %P 143-148 %V 237 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_2002_237_a5/ %G en %F TRSPY_2002_237_a5