U. Krzewska

Structure and phase transition in (CH3NH3)3Bi2Br9. A novel improper ferroelectrics

G. Bator, L. Sobczyk, R. Jakubas, 1988 .

Structure of penta(dimethylammonium) undecachlorotricadmate(II)

Z. Czapla, T. Lis, A. Waśkowska, 1990 .

Phase transitions and dielectric properties of mixed NH4HSeO4-NH4HSO4 crystals

L. Sobczyk, Z. Czapla, O. Czupiński, 1988 .

Dielectric properties and phase transitions in [(CH3)2NH2]5Cd3Cl11 single crystals

Z. Czapla, A. Waśkowska, U. Krzewska, 1989 .