Górniewicz L, Nistri P, Zecca P. Control problems on closed subsets of ${\mathbb R}^n$ via feedback controls. TMNA [Internet]. 1993 Sep. 1 [cited 2024 Jul. 22];2(1):163-78. Available from: https://apcz.umk.pl/TMNA/article/view/TMNA.1993.036