Dipolar and quadrupolar freezing in (KBr)1-x(KCN)xU.G. VolkmannR. Böhmeret al.1986Physical Review Letters
Relaxation dynamics in orientational glassesA LoidlK Knorret al.1991Journal of Non-Crystalline Solids
Polar relaxation mode in pure and iron-doped barium titanateM. MaglioneR. Böhmeret al.1989Physical Review B