Science and Technology of Advanced Materials, Vol 18, Iss 1, Pp 264-272 (2017) Bowen, C R, Dent, A C, Stevens, R, Cain, M G & Avent, A 2017, ' A new method to determine the un-poled elastic properties of ferroelectric materials ' Science and Technology of Advanced Materials, pp. 253-263 . https://doi.org/10.1080/14686996.2017.1302274