Ajsagaliev, S. A.; Onajbaev, K. O.; Mazakov, T. Zh. Controllability of nonlinear control systems. (Russian) Zbl 0573.93002 Izv. Akad. Nauk Kaz. SSR, Ser. Fiz.-Mat. 1985, No. 1(122), 83-87 (1985). Reviewer: J.Klamka MSC: 93B05 93C10 93C99 93B03 47H10 93C15 PDFBibTeX XMLCite \textit{S. A. Ajsagaliev} et al., Izv. Akad. Nauk Kaz. SSR, Ser. Fiz.-Mat. 1985, No. 1(122), 83--87 (1985; Zbl 0573.93002)
Dacka, Czeslaw On the controllability of perturbed nonlinear systems. (English) Zbl 0457.93015 Podstawy Sterowania 10, 335-345 (1980). MSC: 93B05 93C15 93C10 PDFBibTeX XMLCite \textit{C. Dacka}, Podstawy Sterowania 10, 335--345 (1980; Zbl 0457.93015)