ABSTRACT
If the reader is not familiar with the definitions and properties of the greatest common (left, right) divisors of the matrix polynomials, with the unimodular matrix polynomials and with their (left, right) coprimeness, then the reader should consult the appropriate literature, for example, the books by P. J. Antsaklis and A. N. Michel [5, pp. 526-528, 535-540], C.-T. Chen [18, pp. 591-599] and/or by T. Kailath [84, pp. 373-382].
