Nosair, I. A. R., Hosny, A. H., El-Mikawi, M. A. and Bahaa, H. E.-D. M. (2018) “Modeling System to Support the Determination of the Return on Investment (ROI) for PPP projects in Egypt”, Resourceedings, 1(2), pp. 17–30. doi: 10.21625/resourceedings.v1i2.320.