On a Fundamental Upper Limit for the Open-Circuit Resistance Measurable between any Two Terminals of a Positive Resistance Network. - S. W. Drury; George P. H. Styan; Gerald E. Subak-Sharpe (ISCAS, 1994)

A necessary condition for the realization of a resistive n-port based on network size and on the concept of weighted terminal valency. - Gerald E. Subak-Sharpe; George P. H. Styan (ISCAS, 2000)