The lognormal distribution assumption for the term structure of interest is the most natural way to exclude negative spot and forward rates. However, imposing this assumption on the continuously compounded interest rate has a serious drawback: rates explode and expected rollover returns are...

The aim of this paper is to develop a model for the pricing of European options under the assumption of a stochastic interest rate in a discrete-time context. This is accomplished by combining the well-known binomial model for a stock with a binomial model for the spot interest rate. Copyright...