TY - JOUR A1 - Stracke, A. A1 - Bayer, A. A1 - Zimmermann, S. A1 - Wendorff, Joachim Heinz A1 - Wirges, Werner A1 - Bauer-Gogonea, Simona A1 - Bauer, Siegfried A1 - Gerhard, Reimund T1 - Relaxation behaviour of electrically induced polar orientation and of optically induced non-polar orientation in an azo-chromophore side group polymer Y1 - 1999 SN - 0022-3727 ER -