1. P G Drazin and W H Reid, Hydrodynamic stability (Cambridge University Press, 1981)
2. P Manneville, Dissipative structures and weak turbulence (Academic Press, 1990)
3. P Schmid and D S Henningson, Stability and transition in shear flows (Springer, 2001)
4. Mathematically, transient energy growth is linked to the non-normality of the linear stability operator, i.e. the fact that it does not commute with its adjoint so that eigenvectors are not orthogonal P Schmid and D S Henningson, Stability and transition in shear flows (Springer, 2001)[3]
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