1) KOVASZNAY, L.S.G.: Hot-wire Investigation of the Wake behind Cylinders at Low Reynolds Numbers, Proc. Roy. Soc. Lond., Ser. A, Vol. 198, No.1053 (1949), pp.174.190.
2) ROSHKO, A.: On the Development of Turbulent Wakes from Vortex Streets, NACA Rep., No. 1191 (1954).