About NATTERMANN T
About Karl-Marx-Univ., DDR
About TRIMPER S
About Karl-Marx-Univ., DDR
About Journal of Physics. C. Solid State Physics
About order parameter
About inconmensurate structure
About Phase transitions and critical phenomena in general
About Ferroelectrics,antiferroelectrics and ferroelasticity
About IC
About 秩序パラメータ