Michael OG, Oluseyi AV. A Comparative Study of Immediate Annuities and Ordinary Annuities in establishing the Phantom of Zero Liability Under the Trusteeship Pension Valuation Structure. J. Bus. Mgt. [Internet]. 2023 May 2 [cited 2024 May 20];7(01):102-25. Available from: https://www.nepjol.info/index.php/jbm/article/view/54549