Functional-matrix theory for the general linear electrical network. Part 4: Bounds on eigenvalues and network reduction
Alistair G. J. MacFarlane, R. Sabouni · Proceedings of the Institution of Electrical Engineers · 1968
Vogt's inequalities are used to obtain bounds on the real parts of the eigenvalues of the linear functional matrix in terms of those of two smaller matrices. Rules are derived for obtaining the linear functional matrix corresponding to some simple network operations.