Edomwonyi-Otu, L.C., Gimba, M.M. and Yusuf, N. (2020) “Drag Reduction with Biopolymer-Synthetic Polymer Mixtures in Oil-Water Flows: Effect of Synergy”, Engineering Journal, 24(6), pp. 1–10. doi:10.4186/ej.2020.24.6.1.