Ferroelectricity in Ca<sub>2</sub>Sr(C<sub>2</sub>H<sub>5</sub>CO<sub>2</sub>)<sub>6(1-<i>x</i>)</sub>(CH<sub>3</sub>CO<sub>2</sub>)<sub>6<i>x</i></sub>E. Nakamura, Masahiko Hosoya, Tatsuya Nagai et al.|Journal of the Physical Society of Japan|1969Cited by 24