Related papers: Incomplete Kloosterman sums and Hooley's R$^*$-Con…

This paper has been withdrawn by the authors, due a crucial mistake in Lemma 2

This paper has been withdrawn.

This paper has been withdrawn by the author due to some errors.

The paper has been withdrawn by the authors

This article has been withdrawn due to an error in a proof of the main result.

This paper has been withdrawn by the author due to an error estimate in Lemma 3.1.

The paper has been withdrawn

The paper has been withdrawn by the author.

This paper has been withdrawn by the author.

This paper has been withdrawn by the author due to a gap in the proof of the main result.

This paper has been withdrawn by the author. A much more revised version is available as arXiv:0909.4238.

This paper has been withdrawn by the author.

The paper has been withdrawn.

This paper has been withdrawn by the author, due to an error in Proposition 2.2.

withdrawed due to a substantial error.

This paper has been withdrawn by the author due to essential mistakes in some previous versions.

This paper has been withdrawn by the author, due an error in claim 1.

This paper has been withdrawn by the author due to the fact that the negative sign of the exponent of $R$ in (2.20) is not allowed by the second inequality of (2.2), and thus the desired vanishing in (2.20) could not be obtained by this…

This paper has been withdrawn by the author due to a crucial error in the Proof of Theorem 0.3

This paper has been withdrawn by the author due to the incorrect argument for the security.