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2. Classical Network Theory;Belevitch,1968
3. J-expansive matrix functions and their role in the theory of electrical circuits;Efimov;Uspekhi Mat. Nauk,1973
4. Factorization methods for transfer matrices of lossless two-ports;Fettweiss;IEEE Trans. Circuit Theory,1970
5. A maximum principle for J-contractive operator functions and some of its consequences;Ginzburg;Izv. Vysh. Uchebn. Zaved. Mat.,1963