The mentioned paper is a logic sequel of the paper [1], where the approach represented in [2,3] has been extended from sampled-data (SD) systems to continuous periodic processes. This approach is connected with applying the parametric transfer matrix (PTM) concept and the stro-boscopic effect of the sampler. The comment essentially repeats the basics of the paper content and the obtained results therein. At the same time the comments concerning the general evaluation of the chosen approach, in our opinion are depreciating, and we do not agree with them. The author of the discussion wrote that the simple structure, studied in the paper, limits the possibilities of our method, because of problems to calculate the PTM for more complicated systems. In our opinion that apprehension is baseless. The considered structure was chosen only in order to demonstrate the ideas for extending the PTM method from SD systems to continuous periodic elements with several delays.
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