Related papers: Estimating the State of AC Power Systems using Sem…

This paper has been withdrawn by the author due to new results to be added.

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The article is taken out.

This paper has been withdrawn by the authors, due a gap in the proof of the main Theorem.

This paper has been withdrawn. See published paper http://arxiv.org/math.HO/0512390

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This paper has been withdrawn by the authors due to inadequate arguments.

This paper is being withdrawn.

The paper has been withdrawn by the authors.

This paper has been withdrawn Abstract: This paper has been withdrawn by the author due to the publication.

This paper is withdrawn because the results in the paper are included in a paper to be published in Mathematical and Computer Modelling.

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This paper has been withdrawn by the author. This paper is now obsolete. For a solution please see: arXiv:/1205.4265.

This paper has been withdrawn, as it should not have been a new submission. Please instead see the latest version of arXiv:0904.0436.

This paper has been retracted, for obvious reasons.

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The paper has been temporarily withdrawn by the authors.

This paper has been withdrawn by the authors due to a numerical error. A revised version will be posted shortly.

This paper has been withdrawn by the authors due to need of essential revision.