M. Rakowski et L. Rodman, INTERPOLATION AND DIVISIBILITY OF MEROMORPHIC MATRIX FUNCTIONS, Journal of mathematical analysis and applications, 199(2), 1996, pp. 592-619
We construct a meromorphic matrix function with given spectral data in
the form of null and pole functions, coupling matrix, and left annihi
lator at every point in the domain of definition of the function. Base
d on these results, descriptions are given of minimal divisibility of
meromorphic matrix functions in terms of restrictions (appropriately u
nderstood) of their spectral data. (C) 1996 Academic Press, Inc.