Citation: Matthew A. Gave; Daniel Bilc; S. D. Mahanti; Jean D. Breshears; Mercouri G. Kanatzidis (2005). On the Lamellar Compounds CuBiP2Se6, AgBiP2Se6 and AgBiP2S6. Antiferroelectric Phase Transitions Due to Cooperative Cu+ and Bi3+ Ion Motion. Inorganic Chemistry, 44, pp. 5293-5303.