@incollection{Ogawa15,
author = {Toshio Ogawa},
title = {Origin of Piezoelectricity in Piezoelectric Ceramics from the Viewpoints of Elastic Constants Measured by Acoustic Wave Velocities},
booktitle = {Ferroelectric Materials},
publisher = {IntechOpen},
address = {Rijeka},
year = {2015},
editor = {Aime Pelaiz Barranco},
chapter = {2},
doi = {10.5772/60793},
url = {https://doi.org/10.5772/60793}
}