1. ISO 5167-1, Measurement of fluid flow by means of pressure differential devices. Organisation for Standardisation, Geneva, 1991.
2. Erdal, A., Lindholm, D. and Thomassen, D., Development of a flow conditioner. North Sea Flow Measurement Workshop, October 1994.
3. Erdal, A., Torbergsen, L. E., Rimestad, S. and Krogstad, P. Å., Evaluation of a CFD model for simulation of simplified flow conditioners. Fluid Flow Measurement 3rd International Symposium, San Antonio, March 1995.
4. Thomassen, D., Langsholt, M. and Sakariassen, R., Flow conditions in a gas metering station. North Sea Flow Measurement Workshop, October 1992.
5. Perspective: selected benchmarks from commercial CFD codes;Freitas;Journal of Fluids Engineering,1995