“…The significance of these zeros has been shown by the important role they play in several aspects of control system theory and design, e.g. optimal control [10], system responses [6,7], model matching [11,12], decoupling theory [3], convolution coding [13], regulator synthesis [14] and disturbance rejection [15]. The occurrence of these zeros can be thought of as a consequence of the structural nature of multi-input, multi-output systems.…”