@inbook{lee_soh_2006, title={Effects of electric fatigue on piezoelectric ceramics}, volume={306-308}, booktitle={Fracture and strength of solids, proceedings of the Sixth International Conference on Fracture & Strength of Solids (Key engineering materials; 306-308)}, author={Lee, K. L. and Soh, A. K.}, year={2006}, pages={91–96} }