Quantum electric dipole glass and frustrated magnetism near a critical point in Li2ZrCuO4 E. Vavilova, A. S. Moskvin, Y. C. Arango, A. Sotnikov, S.-L. Drechsler, R. Klingeler, O. Volkova, A. Vasiliev, V. Kataev and B. Büchner EPL, 88 2 (2009) 27001 Published online: 22 October 2009 DOI: 10.1209/0295-5075/88/27001