Electronic structure and fluctuation effects in the spin-1/2 quantum magnet TiOCl M. Sing, M. Hoinkis, J. Schäfer, M. Klemm, S. Horn, H. Benthien, E. Jeckelmann, L. Pisani, R. Valentí and R. Claessen J. Phys. IV France, 131 (2005) 331-334 Published online: 18 January 2006 DOI: 10.1051/jp4:2005131083