1. Coustols, E. & Savill, A. M. in AGARD FDP/VKI Special course on Skin Friction and Drag Reduction. 2–6 March, VKI Brussels, Belgium (1992).
2. Rajaee, M., Karlsson, S. K. F. & Sirovich, L. On the streak spacing and vortex roll size in a turbulent channel flow. Phys. Fluids 258, 2439–2443 (1995).
3. Patel, V. C. & Head, M. R. Some observations on skin friction and velocity profiles in developed pipe and channel flows. J. Fluid Mech. 38, 181–193 (1969).
4. von Karman, T. Mechanische ahnlichkeit und turbulenz. Nachr. Akad. Wiss. Göttingen 58, (1930).
5. Millikan, C. B. A. in 5th Int. Congr. of Applied Mechanics 386 (Wiley, New York, (1938)).