Lyapunov stability theory: a quite new approach - discrete descriptive time delayed system. - Dragutin Lj. Debeljkovic; Sreten B. Stojanovic; Nemanja S. Visnjic; Stevan A. Milinkovic (ACC, 2006)

Singular Time Delayed System Stability Theory in the sense of Lyapunov: A Quite New Approach. - Dragutin Lj. Debeljkovic; Sreten B. Stojanovic; Nemanja S. Visnjic; Stevan A. Milinkovic (ACC, 2007)