Gessing, Ryszard; Latarnik, Michal Suboptimal control in the presence of disturbances. III: Optimal and \(\varepsilon\)-optimal control for an infinite terminal time. (Polish) Zbl 0296.49006 Arch. Autom. Telemech. 20, 3-18 (1975). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page MSC: 49J99 Existence theories in calculus of variations and optimal control 93B05 Controllability PDFBibTeX XMLCite \textit{R. Gessing} and \textit{M. Latarnik}, Arch. Autom. Telemech. 20, 3--18 (1975; Zbl 0296.49006)