Kamaljit Singh Sokhal and  Gangacharyulu Dasoraju and  Vijaya Kumar Bulasara,  Effect of Reynolds Number and Concentration of Biopolymer (Gum Arabic) on Drag Reduction of Turbulent Flow in Circular Pipe.   journal   = {International Journal of Mechanical and Materials Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2019, vol. 146(2). 120 - 125
    [viewed 13 November 2019]. Available from: https://publications.waset.org/pdf/10010047.