Exact Equal Time Statistics of Orszag-McLaughlin Dynamics By The Hopf   Characteristic Functional Approach
  By employing Hopf's functional method, we find the exact characteristic functional for a simple nonlinear dynamical system introduced by Orszag. Steady-state equal-time statistics thus obtained are compared to direct numerical simulation. The solution is both non-trivial and strongly non-Gaussian. 
Ookie Ma and J. B. Marston