Comments, with reply, on "Optimal rejection of persistent disturbances, robust stability, and mixed sensitivity minimization" by M. A. Dahleh and J. B. Pearson

The commenters point out that the sufficient condition for robust stability given in the above-titled work (see ibid., vol.33, no.8, p.722-731, Aug. 1988) should be modified. In their reply, the authors agree with the commenters and describe the assumptions which led to the omission.<
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