%0 Journal Article %A Akpanibah, Edikan E. %A Osu, Bright O. %A Ihedioha, Silas A. %T On the optimal asset allocation strategy for a defined contribution pension system with refund clause of premium with predetermined interest under Heston's volatility model %J Journal of nonlinear sciences and its applications %D 2020 %P 53-64 %V 13 %N 1 %U http://geodesic.mathdoc.fr/articles/10.22436/jnsa.013.01.05/ %R 10.22436/jnsa.013.01.05 %G en %F 10_22436_jnsa_013_01_05