Nonlinear Boundary Stabilization of a von Kármán Plate Equation

Let Ω be an open bounded domain in R² with a sufficiently smooth (e.g., C^∞) boundary, Γ In Ω, we consider the following von Kármán system in the variables w ( t,x) and x ( w ( t,x )) with nonlinear feedback controls, g, f₁, and f₂