Related papers: One-Dimensional Magnetism

This paper has been withdrawn by the author(s). Please see arXiv:0711.3910 for revision.

This paper has been withdrawn.

This paper is withdrawn because the results in the paper are included in a paper to be published in Mathematical and Computer Modelling.

This paper is withdrawn.

This paper has been withdrawn.

This paper is withdrawn.

This paper is being withdrawn.

This paper has been withdrawn.

This paper has been withdrawn by the author.

This paper was withdrawn by the authors.

This paper has been withdrawn since a trivial proof of the result has been pointed out to the author.

This paper has been withdrawn.

This paper has been withdrawn

This paper has been withdrawn by the author.

This paper has been withdrawn

This paper has been withdrawn due to non-clearness of some technical points, as well as lack of a reasonable statement of quantization conjecture.

This paper was withdrawn by the author due to an edition's rights

This paper has been withdrawn, pending revision of the main conclusion, in the light of the criticism of cond-mat/0302043.

This paper was withdrawn by the authors.

This paper has been withdrawn by the author due to new results to be added.