TY - CONF A1 - Geerkens, Anja A1 - Ewert, Siegfried A1 - Kremer, Reinhard K. T1 - Ultrasonic investigations of the elastic properties of La2CuO4+d Y1 - 2002 UR - https://opus4.kobv.de/opus4-UBICO/frontdoor/index/index/docId/355 SN - 0420-0195 SP - 949 ER -