Before revision:  Despite the lack of normality of probability distributions involved,  newly elaborated models have the same degree of analytical tractability as the Black--Scholes model and the Vasicek model . It allows to obtain new exact simple formulas to value options and bonds .
After revision:  Despite the lack of normality of probability distributions involved, newly elaborated models have the same degree of analytical tractability as the Black--Scholes model and the Vasicek model .