%0 Journal Article %A Kolokoltsov, Vassili N. %T Nonexpansive maps and option pricing theory %J Kybernetika %D 1998 %P 713-724 %V 34 %N 6 %U http://geodesic.mathdoc.fr/item/KYB_1998_34_6_a8/ %G en %F KYB_1998_34_6_a8