Berger T, Dennstädt D. Funnel PMC with feasibility constraints for nonlinear systems with arbitrary relative degree. IEEE Control  Systems Letters. 2022;6:2804-2809.

Berger T, Dennstädt D, Ilchmann A, Worthmann K. Funnel MPC for nonlinear systems with relative degree one. SIAM Journal on Control and Optimization. 2022;60(6):3358-3383.