2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/208463In this paper we compare two classical one-factor diffusion models which are used to model the term structure of interest rates. One of them is based on the Wiener-Bachelier process while the second one is based on the Ornstein-Uhlenbeck process. We show essential differences between the prices of European call options on a zero-coupon bond in these models.17 pages, 2 figures, working paperPricing of SecuritiesData Analysis, Statistics and Probabilitytext