Related papers: Two-component spinor Lie derivatives and spinor-ga…

This paper is withdrawn by the authors.

This paper was withdrawn by the authors because it has been supplanted by gr-qc/0311007 and gr-qc/0311038.

The paper is withdrawn.

This paper has been withdrawn.

This paper has been withdrawn by the author, due to errors in Groebner basis calculations in the cases of five and six dimensional groups.

The paper was withdrawn by the author. Further research is needed.

This paper has been withdrawn due to an error, and no further revisions will be made.

This paper is withdrawn.

This paper has been withdrawn by the author

This paper has been withdrawn by the author

This paper has been withdrawn by the authors.

This paper has been withdrawn by the author because similar published work on the topic was overlooked. See S. Deser and A. Waldron, Nucl. Phys. B 631, 369-387 (2002).

This paper was withdrawn by the authors.

This paper has been withdrawn by the authors because the paper is largely revised and improved, and to appear in Mechanics Research Communications.

This paper has been withdrawn by the author(s)

This paper has been withdrawn by the author.

This paper has been withdrawn by the authors, since it has been merged with Part I (ID 0802.3570)

This paper has been withdrawn by the authors.

This paper has been withdrawn by the author.

This paper has been withdrawn by the authors due to the fact that the conjecture has indeed already long been established.