The anisotropic quantum antiferromagnet on the Sierpiński gasket: Ground state and thermodynamics A. Voigt, W. Wenzel, J. Richter and P. Tomczak Eur. Phys. J. B, 38 1 (2004) 49-58 Published online: 20 April 2004 DOI: 10.1140/epjb/e2004-00098-8