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Schliemann, John and Läuchli, Andreas M. (2012) Entanglement Spectra of Heisenberg Ladders of higher Spin. arXiv.
Läuchli, Andreas M. and Schliemann, John (2012) Entanglement spectra of coupled S=1/2 spin chains in a ladder geometry. Phys. Rev. B 85, 054403.