Structure and superconducting properties of Bi2Sr2CaCu2O8 + x single crystals Levin, A. A. ; Smolin, Yu. I. ; Shepelev, Yu. F. ; Sapozhnikova, L. M. ; Golovenchits, E. I. ; Sanina, V. A. Abstract Publication: Physics of the Solid State Pub Date: August 1993 Bibcode: 1993PhSS...35.1079L