Characteristic microstructure in small Bi-2212 grains showing the Wohlleben effect as revealed by High-Resolution Electron MicroscopyB. Freitag, B. Büchner, N. Knauf, B. Roden, H. Micklitz, A. Freimuth and V. KataevEurophys. Lett., 45 3 (1999) 393-398DOI: https://doi.org/10.1209/epl/i1999-00177-6