Generalized noise analysis technique for four-port linear networks. - Luis Moura; Paulo Miguel Nepomuceno Pereira Monteiro; Izzat Darwazeh (IEEE Trans. Circuits Syst. I Regul. Pap., 2005)

Extending the Frequency Tuning Range of VCOs Using Varactor Arrays: Design Guidelines. - Luis Moura (Circuits Syst. Signal Process., 2012)