1. Numerische Mathematik für Ingenieure;Becker,1985
2. Stability and Asymptotic Behavior of Differential Equations;Coppel,1965
3. G. Dahlquist, Stability and error bounds in the numerical integration of ordinary differential equations, Kungl. Tekn. Högsk. Handl. No. 130, Stockholm, 1959.
4. The measure of a matrix as a tool to analyse computer algorithms for circuit analysis;Desoer;IEEE Trans. Circ. Theory,1972
5. Nichtlineare Schwingungen;Hagedorn,1978