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This paper has been temporarily withdrawn by the author. A modified version will be resubmitted. One of the trivial solutions was missed with crucial bearing on conclusions.
The paper has been withdrawn by the author due to a gap in Proof of Theorem 1.1.
This paper has been withdrawn by the author due to some errors.
This paper has been withdrawn by the author, since some results of the paper have been already obtained in [J.~Lewandowski, Class. Quantum Grav. 9 (1992), no. 10, L147--L151.]
Withdrawn by arXiv administration because authors have forged affiliations and acknowledgements, and have not adequately responded to charges [hep-th/9912039] of unattributed use of verbatim material.
This paper was withdrawn as it may have appeared elsewhere, although in a different form.
The article has been withdrawn - the proof of the final corollary turned out to rely on an unproven statement. If the authors will manage to repair the argument, resubmission will be made.
We withdraw this paper due to insufficient arguments in the derivation of Theorem 1. See quant-ph/0005062 for the new paper
This paper has been withdrawn by the author due to some errors.
This paper has been withdrawn by the author, due a critical mistake on page 3.
The paper has been temporarily withdrawn.
This paper has been withdrawn. A much-improved version can be found at hep-ph/0209176.
This paper has been withdrawn by the author due to some inaccurate descriptions in the section of INTRODUCTION and CONCLUSIONS.
This paper has been withdrawn.
This paper has been withdrawn by the authors due to several major changes in concepts and results. New version will follow briefly as a new e-print.
This paper has been withdrawn by the author due to a crucial error related with the consideration of regular points
This paper was withdrawn by the authors because it has been supplanted by gr-qc/0311007 and gr-qc/0311038.
This paper has been removed by arXiv administrators because of excessive overlap with gr-qc/0506062.
This manuscript has been withdrawn, since the authors have detected numerical inaccuracies that invalidate their main results concerning the existence of repulsive Casimir forces within a rectangular piston. Formulas presented in the…
This paper has been withdrawn by the author