Matheus Souza, Wynita M. Griggs, Rodrigo H. Ordóñez-Hurtado, Surya Shravan Kumar Sajja, Alexander Lanzon, Robert N. Shorten. Characterising discrete-time linear systems with the "mixed" positive real and bounded real property. Eur. J. Control, 20(5):259-268, 2014. [doi]
Abstract is missing.