Bruns, Thomas MPI for Meteorology, Max Planck Society;
1520-0469-1520-0469_1985_042_2506_colanp_2_0_co_2.pdf (Publisher version), 2MB
Bruns, T. (1985). Contribution of linear and nonlinear processes to the long-term variability of large-scale atmospheric flows. Journal of the Atmospheric Sciences, 42, 2506-2522. doi:10.1175/1520-0469(1985)042<2506:COLANP>2.0.CO;2.