Media type: E-Article Title: A universal order-disorder mechanism of structural phase transitions in a′A″BX4compounds Contributor: Kurzyński, Michal imprint: Informa UK Limited, 1992 Published in: Ferroelectrics Language: English DOI: 10.1080/00150199208017064 ISSN: 0015-0193; 1563-5112 Keywords: Condensed Matter Physics ; Electronic, Optical and Magnetic Materials Origination: Footnote: