Salisu, M. M., Muhammad, L. J., Laminu, I. and Aliyu, U. M. 2020. Modelling and Economic Analysis of a Simple Repairable System with Constant Failure and Repairs . International Journal of Science for Global Sustainability. 6, 3 (Oct. 2020), 8. DOI:https://doi.org/10.57233/ijsgs.v6i3.16.