"T. Lorenz,S. Stark,O. Heyer,N. Hollmann,A. Vasiliev,A. Oosawa,H. Tanaka","Thermodynamics of the Coupled Spin-Dimer System TlCuCl<sub>3</sub> Close to a Quantum Phase Transition",,"J. Magn. & Magn. Mater.",,"Vol. 316",,"pp. 291-297",2007,