Amadi Ugwulo Chinyere and Lewis D. Gbarayorks and Emem N. H. Inamete, Modelling an Investment Portfolio with Mandatory and Voluntary Contributions under M-CEV Model. journal = {International Journal of Physical and Mathematical Sciences}, [online]. World Academy of Science, Engineering and Technology. December 2022, vol. 192(12). 120 - 125 [viewed 20 September 2024]. Available from: https://publications.waset.org/pdf/10012839.