%0 Journal Article %A Kolokoltsov, Vassili N. %T Nonexpansive maps and option pricing theory %J Kybernetika %D 1998 %P [713] %V 34 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/KYB_1998__34_6_a8/ %G en %F KYB_1998__34_6_a8