Dc. Hamill, TIME-REVERSAL DUALITY BETWEEN LINEAR-NETWORKS, IEEE transactions on circuits and systems. 1, Fundamental theory andapplications, 43(1), 1996, pp. 63-65
In time reversal duality, pairs of networks have corresponding wavefor
ms that are time reversed versions of each other, The relation linking
a pair of generalized, nonlinear, time varying dynamical systems is d
erived, It is then applied to time invariant linear networks, Four typ
es of time reversal circuit duality are possible, and in two of these
the direction of energy flow is reversed.