Related papers: Cluster Crystals in Confinement

This paper has been withdrawn as it has been superseded by postings arXiv:quant-ph/0702147 and arXiv:0712.2935

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This paper has been withdrawn by the author(s), due the final version in math.QA/0604564

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This paper has been withdrawn by the author due to a crucial sign error in equation 1

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