1. Alboudwarej, H.; Felix, J.; Badry, R. et al. (2006). Highlighting heavy oil. Oilfield review, Schlumberger.
2. Arnold, D. & Smith, H. (1980). Measuring oil and water cuts in a multiphase flowstream with elimination of the effects of gas in determining the liquid cuts. US4200789 A.
3. Falcone, G.; Alimonti, C.; Hewitt, G.F. & Harrison, B. (2002). Multiphase flow metering: Current trends and future developments, Distinguished Author Series. J. Petrol. Technol. (JPT), April: 77-84.
4. Falcone, G.; Hewitt, G. & Alimonti, C. (2009). Multiphase flow metering: principle and applications. Elsevier. Schlumberger (2006). Heavy Oil Drilling Solution Highlights Potential in Eastern Europe, http://www.slb.com/∼/media/Files/ipm/case_studies/sagd_russia.pdf.
5. Kehler, P. (1976). Feasibility of calibration of liquid sodium flowmeters by neutron activation techniques. ANL-CT-76-17.