1. M. Milić, Explicit formulation of the state equations for a class of degenerate linear networks,Proc. IEE,118, 742–745, 1971.
2. S. P. Sing and R. W. Liu, Existence of the state equation representations of linear large-scale dynamical systems,IEEE Trans. Circuit Theory,20, 239–246, 1973.
3. L. O. Chua and P. M. Lin,Computer-Aided Analysis of Electronic Circuits, Prentice-Hall, NJ, 1975.
4. R. W. Newcomb, The semistate description of nonlinear time-variable circuits,IEEE Trans. Circuits and Systems,28, 62–71, 1981.
5. B. Dziurla and R. W. Newcomb, The Drazin inverse and semi-state equations,Proceedings of the International Symposium on Mathematical Theory on Networks and Systems, Delft, pp. 283–289, 1979.