Related papers: Sharp bounds on the critical stability radius for …

This paper has been withdrawn by the authors.

This paper has been withdrawn by the author, as it is now incorporated in 0901.4506 (v4)

This paper has been withdrawn by the author(s) due to the discussion was made on the basis of linear term merely, which is incomplete.

This paper has been withdrawn.

This paper has been withdrawn by the author due to a coming paper completely superseding it.

This paper has been withdrawn.

This paper has been withdrawn. See quant-ph/9806031 for a discussion.

This paper has been withdrawn by the author due to some problems. Please contact me.

This paper has been withdrawn

This paper has been withdrawn by the authors

This paper has been withdrawn by the author, due to the insecurity against attacks received in quant-ph/0605027v5.

This paper has been withdrawn by the author due to the fact that the results were found to be done previously.

This paper has been withdrawn by the authors, since it had been the excessive repetition of the part of hep-ph/0310190.

This paper has been withdrawn.

This paper has been withdrawn.

This paper has been withdrawn by the authors because it had major revisions.

This paper has been withdrawn by the author due to unspecified problems.

This paper has been withdrawn, as it has been merged into arXiv:1009.6144

This paper has been withdrawn as the proof of Lemma 4.1 is incomplete.

This paper has been withdrawn by the authors, because it has been made obsolete by the detailed expositions in our papers in arXiv:0812.4885 (the mathematics part) and arXiv:0812.4737 (the economics part).