1. Optimal portfolio selection: applications in insurance business;Ahcan,2004
2. Stochastic Differential Equations: Theory and Applications;Arnold,1974
3. Interest and mortality randomness in some annuities;Beekman;Insur. Math. Econ.,1990
4. Extra randomness in certain annuity models;Beekman;Insur. Math. Econ.,1991
5. One approach to dual randomness in life insurance;Beekman;Scand. Actuarial J.,1993