Media type: E-Article Title: Ultrasound study of YBa2Cu3O7−δ samples of different microstructure Contributor: Lemmens, Peter; Stellmach, Frank; Ewert, Siegfried; Guo, Simon; Wynants, Jochen; Arlt, Gottfried; Comberg, Albert; Passing, Helga; Marbach, Gerolf imprint: Elsevier BV, 1988 Published in: Physica C: Superconductivity Language: English DOI: 10.1016/0921-4534(88)90599-0 ISSN: 0921-4534 Keywords: Electrical and Electronic Engineering ; Energy Engineering and Power Technology ; Condensed Matter Physics ; Electronic, Optical and Magnetic Materials Origination: Footnote: