, Volume 2, Issue 2, pp 265-272

On the completeness of Hu Hai chang's solution

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In this paper, the completeness of Hu Hai-chang's solution is proved in the case of convex regions in z-direction under a supplementary condition. On the other hand, for those non-convex regions in z-direction, Hu Hai-chang's solution is proved to be incomplete.

Communicated by Chien Wei-zang.