1. Batchelor, G. K.: 1960, The Theory of Homogeneous Turbulence, Cambridge University Press, London, Sec. 2.1, p. 14.
2. Batchelor, G. K.: 1973, An Introduction to Fluid Dynamics, Cambridge University Press, London, Sec. 1.6, p. 28.
3. Chatwin, P. C. and Allen, C. M.: 1985, 'A Note on Time Averages in Turbulence with References to Geophysical Applications', Tellus
37B, 46-49.
4. Chatwin, P. C. and Sullivan, P. J.: 1980, 'The Core-bulk Structure Associated with Diffusing Clouds', in Turbulent Shear Flows 2(selected papers from 2nd Int. Symp. on Turbulent Shear Flows, Imperial College 1979, edited by L. J. S. Bradbury, F. Durst, B. E. Launder, F.W. Schmidt and J. H. Whitelaw), Springer-Verlag, Berlin, pp. 379-389.
5. Chatwin, P. C. and Sullivan, P. J.: 1987, 'Perceived Statistical Properties of Scalars in Turbulent Shear Flows', in Proc. 6th Symposium on Turbulent Shear Flows, Toulouse, France, pp. 9.1.1-9.1.6.