Fordjour, A., A. F.O.A., F. O. Adjei, A. A. Ibrahm, and X. Zhu. “Development of Intensity-Duration Frequency Curves for Koforidua City in Ghana”. European Scientific Journal, ESJ, Vol. 15, no. 12, Apr. 2019, p. 82, doi:10.19044/esj.2019.v15n12p82.