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 T2 - Physical Review B Y1 - 2004 UR - https://www.hb.fh-muenster.de/opus4/frontdoor/index/index/docId/6480 VL - 70 SP - 235106 EP - 1 - 8 ER -