“…The dynamics of this class of systems are typically governed by a combination of high-order partial differential equations (PDEs), ordinary differential equations (ODEs) and a set of static boundary conditions. Coupled systems of first and second order PDEs with ODEs have been largely investigated in the literature, and tackled with different approaches, such as backstepping [8,10], Lyapunov methods [22,1] and matrix inequalities [4,9]. However, the research on high order PDEs systems is more fragmentary.…”