Related papers: Statistical studies of Galactic open clusters I. S…

This paper has been withdrawn by the author because it was a speculative investigation.

This paper has been withdrawn.

This paper has been withdrawn Abstract: This paper has been withdrawn by the author due to the publication.

This paper has been withdrawn by the author, since now all four parts of the review are available as a single file 0804.1639

This paper was withdrawn by the author.

This paper has been withdrawn by the authors due to need of essential revision.

This paper has been withdrawn due to a copyright restrictions.

This paper has been withdrawn.

The paper has been withdrawn by the author.

This submission has been withdrawn at the request of the author.

This paper has been withdrawn by the author. It will be posted on astro-ph once the proceedings of the 363rd Heraeus Seminar on Neutron Stars and Pulsars are ready.

This paper has been withdrawn by the author since it has been accepted for publishing in J. Geophys. Res. Please contact the American Geophysical Union for the refereed article.

The paper has been withdrawn

This paper has been withdrawn because of serious errors.

This paper has been withdrawn by the authors due to a crucial error.

This paper has been withdrawn by the authors.

This paper has been withdrawn by the author due to essential mistakes in some previous versions.

This paper has been withdrawn

The paper has been withdrawn

This paper has been withdrawn by the author due to errors and bad formalization.