Chernov, Yu. P. Über ein Problem der parametrischen gebrochen-linearen Programmierung. (Russian) Zbl 0346.90051 Izv. Akad. Nauk Kirg. SSR 1970, No. 3, 20-27 (1970). MSC: 90C30 90C05 PDFBibTeX XMLCite \textit{Yu. P. Chernov}, Izv. Akad. Nauk Kirg. SSR 1970, No. 3, 20--27 (1970; Zbl 0346.90051)
Leonov, M. Ya. Elemente der mathematischen Plastizitaetstheorie. (Russian) Zbl 0337.73024 Izv. Akad. Nauk Kirg. SSR 1970, No. 3, 3-10 (1970). MSC: 74C99 PDFBibTeX XMLCite \textit{M. Ya. Leonov}, Izv. Akad. Nauk Kirg. SSR 1970, No. 3, 3--10 (1970; Zbl 0337.73024)
Bykov, Ya. V.; Botashev, A. I. Periodic solutions of systems of difference equations. (Russian) Zbl 0323.39003 Izv. Akad. Nauk Kirg. SSR 1970, No. 3, 11-19 (1970). MSC: 39A10 PDFBibTeX XMLCite \textit{Ya. V. Bykov} and \textit{A. I. Botashev}, Izv. Akad. Nauk Kirg. SSR 1970, No. 3, 11--19 (1970; Zbl 0323.39003)