InvitedlecturepresentedattheInternationalSymposiumonPolymerPhysics;
2002;
Qingdao;
ChinaReceivedAugust31;
2002;
IlmenauTechnicalUniversity;
Techn.PhysikII;
D-98693Ilmenau;
Germany;
UniversitatFreiburg;
Inst.f.MakromolekulareChemie;
D-79104Freiburg;
Germany;