H. A. A. Bari, Z. Yousif, Z. B. Yaacob, and E. Oluwasogaakindoyo, “Effect of SDBS on the drag reduction characteristics of polyacrylamide in a rotating disk apparatus”, IJBAS, vol. 4, no. 3, pp. 326–332, Aug. 2015, doi: 10.14419/ijbas.v4i3.4883.