TY - JOUR A1 - Mertins, H.-Ch. A1 - Oppeneer, P. M. A1 - Valencia, S. A1 - Gudat, W. A1 - Senf, F. A1 - Bressler, P. R. T1 - X--Ray Natutral Birefringence in Reflection From Graphite JF - Physical Review B Y1 - 2004 VL - 70 SP - 235106 EP - 1 - 8 ER - TY - GEN A1 - Mertins, H.-Ch. A1 - Gumlich, H.-E. A1 - Bressler, P. R. T1 - Investigation on the electronic structure of Mn doped II--VI--compounds by synchrotron radiation, Int. Conf. on Electroluminescence, Hamamatsu, Japan Y1 - 1994 ER -