  The circuit recently proposed by Murali, Lakshmanan and Chua (MLC) is one of
the simplest non-autonomous nonlinear electronic circuits which shows a variety
of dynamical phenomena including various bifurcations, chaos and so on. In this
paper we study the spatio-temporal dynamics in one and two dimensional arrays
of coupled MLC circuits both in the absence as well as in the presence of
external periodic force. In the absence of any external force, the propagation
phenomena of travelling wave front and its failure have been observed from
numerical simulations....
