Sustaining turbulence in spectrally stable shear flows – interplay of linear transient growth and nonlinear transverse cascadeD. Gogichaishvili, G. Mamatsashvili, W. Horton and G. ChagelishviliEAS Publications Series, 82 (2019) 423-434DOI: https://doi.org/10.1051/eas/1982037