Magnetization and specific heat of the dimer system CuTe2O5
  We report on magnetization and specific heat measurements on single-crystalline CuTe2O5. The experimental data are directly compared to theoretical results for two different spin structures, namely an alternating spin-chain and a two-dimensional (2D) coupled dimer model, obtained by Das et al. [Phys. Rev. B 77, 224437 (2008)]. While the analysis of the specific heat does not allow to distinguish between the two models, the magnetization data is in good agreement with the 2D coupled dimer model. 
R. M. Eremina, T. P. Gavrilova, A. G\"unther, Zhe Wang, R. Lortz, M.   Johnsson, H. Berger, H.-A. Krug von Nidda, J. Deisenh...
cond-mat.str-el cond-mat.mtrl-sci