Bibby, Bo Martin; SÛrensen, Michael - In: Finance and Stochastics 1 (1996) 1, pp. 25-41
In the present paper we consider a model for stock prices which is a generalization of the model behind the Black-Scholes formula for pricing European call options. We model the log-price as a deterministic linear trend plus a diffusion process with drift zero and with a diffusion coefficient...