1. Turbulent Strömung im Innern des rechteckigen offenen Kanals;Nikuradse;VDI-Forschungsheft.,1926
2. R.G. Deissler, Analytical and experimental investigation of adiabatic turbulent flow in smooth tubes, NACA TN, no. 2138, 1950
3. Turbulent flow in rectangular duct;Melling;J. Fluid Mech.,1976
4. Measurements of developing turbulent flow in a square duct;Gessner,1979
5. Calculation of turbulence-driven secondary motion in non-circular ducts;Demuren;J. Fluid Mech.,1984