Related papers: On Severi varieties and Moduli spaces of curves in…

This article has been withdrawn due to an error in a proof of the main result.

This paper has been withdrawn by the author due to incomplete interpretation for the results.

This paper has been withdrawn by the author due to a crucial error in the definition of homomorphism.

This paper has been withdrawn by the author because overcame by arXiv:0910.4694

This paper has been withdrawn.

This paper has been withdrawn by the authors due to an error.

This paper has been withdrawn due to its publication

There have been gaps found in the proofs. The paper is withdrawn until further notice.

This paper has been withdrawn by the author for further modification.

This paper has been withdrawn by the author due to a crucial error in the proof of Lemma 2.2.

This paper has been withdrawn by the author due to a critical error in the proof of Theorem 5.4 on which the proof of the main theorem on the non-simplenss was based.

This paper has been withdrawn by the author, due to a crucial error in the proof of Lemma 3.1.

This paper has been withdrawn by the author. It will be replaced, substantially modified, by sections of the author's completed PhD thesis.

The paper was withdrawn because of its significant overlap with a paper appeared recently.

This paper has been withdrawn by the authors, because of a crucial gap in the proof of the main theorem.

This submission has been withdrawn at the request of the author.

This paper has been withdrawn by the author, due to errors in the figures.

This paper has been withdrawn by the author due to imprecisions which must conduce to wrong results.

This paper has been superseded by math.AG/0510287 and withdrawn by the author.

This paper has been withdrawn by the author due to a crucial argument error at p.10.