Gnezdilov, V.; Deisenhofer, J.; Lemmens, P.; Wulferding, D.; Afanasiev, O.; Ghigna, P.; Loidl, A.; Yeremenko, A. Phononic and Magnetic Excitations in the Quasi-One-Dimensional Heisenberg Antiferromagnet KCuF₃. Fiz. Nizk. Temp. 2012, 38, 538-548.