Virag, Eleanor; Klebaner, Fima C.; Borovkov, Konstantin - In: Finance and Stochastics 7 (2003) 1, pp. 123-143
We propose a new model for pricing of bonds and their options based on the short rate when the latter exhibits a step function like behaviour. The model produces realistic looking spot rate curves, and allows one to derive explicit formulae for the yield curve and put and cap options. This model...