TY - JOUR AU - Kolokoltsov, Vassili N. TI - Nonexpansive maps and option pricing theory JO - Kybernetika PY - 1998 SP - [713] VL - 34 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/KYB_1998__34_6_a8/ LA - en ID - KYB_1998__34_6_a8 ER -