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3. Colebrook, C. F. 1938. Turbulent Flow in Pipes with Particular Reference to the Transition Region between the Smooth and Rough Pipe Laws. Journal of the Institute of Civil Engineers, London 11: 133–156.
4. DET CRC 2014. ROP Continues to Improve in High Speed, Low WOB Trials. DET CRC eNewsletter February 2014. http://detcrc.com.au/enewsletter/explore-february-2014/ .
5. DET CRC 2013. Efficient Solids Removal for Drilling Fluids – The Results Are Clear. DET CRC eNewsletter July 2013. http://detcrc.com.au/enewsletter/explore-july-2013/ .