The ANZIAM Journal: Volume 21 -

A representation result for two-input two-output decentralized control systems
David J. Clements
Published online by Cambridge University Press:

17 February 2009, pp. 113-127
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This paper studies the decentralized control and stabilization of two-input, two-output finite dimensional linear systems. A representation result for the system and a characterization of all stabilizing controllers are given in terms of certain fixed polynomial matrices and a stability constraint.

The diffraction of elastic waves by small cylindrical cavities †
V. T. Buchwald
Published online by Cambridge University Press:

17 February 2009, p. 384
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The note added in proof on p. 495 should read:
The author has discovered that R. P. Kanwal (J. Math. Phys. 44 (1965), 273–283) proposed a technique similar to the one in this paper. Unfortunately, Kanwal's scheme implies that the elastostatic problem can be reduced generally to the solution of Laplace's equation, a result which is well-known to be incorrect.

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