1. Al-Sarkhi, A., Abu-Nada, E., 25–27 May 2005. Effect of drag reducing polymer on annular flow patterns of air and water in a small horizontal pipeline. In: Twelfth International Conference on Multiphase Production Technology, Barcelona, Spain.
2. Effect of drag-reducing polymer on annular gas-liquid flow in a horizontal pipe;Al-Sarkhi;Int. J. Multiphase Flow,2001
3. Effect of pipe diameter on the performance of drag-reducing polymers in annular gas–liquid flows;Al-Sarkhi;Trans IChemE, Chem. Eng. Res. Des.,2002
4. Effect of drag reducing polymers on two-phase gas-liquid flows in a horizontal pipe;Al-Sarkhi;Trans IChemE, Chem. Eng. Res. Des.,2004
5. Effect of drag reducing polymer on air-water annular flow in an inclined pipe;Al-Sarkhi;Int. J. Multiphase Flow,2006