Conversions between Electrical Network Representations
  The behaviour of electrical networks can be described with many different representations, each with their distinct benefits. In this paper, we consider Z, Y, G, H, ABCD, S and T parameters. Formulas exist to go from one representation to another, but implementing them is an error-prone procedure. In this paper, we present a more elegant way to implement the transformations based on matrix calculations. 
Adam Cooman
cs.SY