https://arxiv.org/abs/cond-mat/0301119v1
[cond-mat/0301119v1] Halogen-mediated exchange in the coupled-tetrahedra quantum spin systems...
Abstract page for arXiv paper cond-mat/0301119v1: Halogen-mediated exchange in the coupled-tetrahedra quantum spin systems Cu2Te2O5X2 (X=Br,Cl)