Colebrook, C. F. and White, C. M. (1937). «Experiments with Fluid Friction in Roughened Pipes». Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences. 161 (906): 367–381. Bibcode:1937RSPSA.161..367C. doi:10.1098/rspa.1937.0150.CS1-vedlikehold: Flere navn: forfatterliste (link)
Brkić, Dejan (2011). «An Explicit Approximation of Colebrook’s equation for fluid flow friction factor». Petroleum Science and Technology. 29 (15): 1596–1602. doi:10.1080/10916461003620453.
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Colebrook, C. F. and White, C. M. (1937). «Experiments with Fluid Friction in Roughened Pipes». Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences. 161 (906): 367–381. Bibcode:1937RSPSA.161..367C. doi:10.1098/rspa.1937.0150.CS1-vedlikehold: Flere navn: forfatterliste (link)