Fritzsche K, Röbenack K, Guo Y. Flat input based canonical form observers for non-integrable nonlinear systems. Syst. Theor. Control Comput. J. [Internet]. 2022 Jun. 30 [cited 2025 Apr. 3];2(1):13-21. Available from: https://stccj.ucv.ro/index.php/stccj/article/view/31