S. H. Ewaid, T. D. Hussein, and F. K. Emran, “Fuzzy Logic Inference Index to Assess the Water Quality of Tigris River within Baghdad City”, Al-Mustansiriyah Journal of Science, vol. 29, no. 3, pp. 16–20, Mar. 2019, doi: 10.23851/mjs.v29i3.617.