“…Much of this work was carried out during the late 1970s and early 1980s by S. Winograd [19][20][21][22] and H. J. Nussbaumer [12,13] and placed in a mathematical framework by several of their collaborators including L. Auslander, E. Feig [3] and at a later time by C. S. Burrus [5,6], I. Gertner [9], and M. Rofheart [15]. Additional results and references can be found in texts [4,8,11,17,18].…”