A. N. Laghari, G. D. Walasai, A. R. Jatoi, F. A. Shaikh, and Z. A. Siyal, “Performance Analysis of Water Filtration Units for Reduction of pH, Turbidity, Solids and Electricity Conductivity”, Eng. Technol. Appl. Sci. Res., vol. 8, no. 4, pp. 3209–3212, Aug. 2018.